Materials Today Bio

Article	Citations
Smart/stimuli-responsive hydrogels: Cutting-edge platforms for tissue engineering and other biomedical applications	129
A tough act to follow: collagen hydrogel modifications to improve mechanical and growth factor loading capabilities	114
Advanced application of stimuli-responsive drug delivery system for inflammatory arthritis treatment	102
The mechanical characterization of blood vessels and their substitutes in the continuous quest for physiological-relevant performances. A critical review	92
Micro/nanoscale magnetic robots for biomedical applications	83
Mesenchymal stem cell exosomes in bone regenerative strategies—a systematic review of preclinical studies	73
Nature-derived materials for the fabrication of functional biodevices	69
Extracellular vesicle-loaded hydrogels for tissue repair and regeneration	64
Magnetoelectric effect: principles and applications in biology and medicine– a review	61
Electrospun strong, bioactive, and bioabsorbable silk fibroin/poly (L-lactic-acid) nanoyarns for constructing advanced nanotextile tissue scaffolds	59
Recent progress of antibacterial hydrogels in wound dressings	56
Reactive-oxygen-species-scavenging nanomaterials for resolving inflammation	53
Tissue mimetic hyaluronan bioink containing collagen fibers with controlled orientation modulating cell migration and alignment	53
An open-source handheld extruder loaded with pore-forming bioink for in situ wound dressing	49
Towards principled design of cancer nanomedicine to accelerate clinical translation	48
Mesoporous bioactive glasses for regenerative medicine	45
Recent advances in multifunctional nanomaterials for photothermal-enhanced Fenton-based chemodynamic tumor therapy	43
The waves that make the pattern: a review on acoustic manipulation in biomedical research	43
Recent advances in responsive hydrogels for diabetic wound healing	40
High-resolution lithographic biofabrication of hydrogels with complex microchannels from low-temperature-soluble gelatin bioresins	39
Advances in biomaterials for skeletal muscle engineering and obstacles still to overcome	39
Bioactive glasses and glass–ceramics for hyperthermia treatment of cancer: state-of-art, challenges, and future perspectives	37
Rational design and latest advances of codelivery systems for cancer therapy	36
Bioinspired silk fibroin materials: From silk building blocks extraction and reconstruction to advanced biomedical applications	35
Strategies to improve bioactive and antibacterial properties of polyetheretherketone (PEEK) for use as orthopedic implants	35

Fabrication of gelatin-based and Zn2+-incorporated composite hydrogel for accelerated infected wound healing	34
Scaffolds in the microbial resistant era: Fabrication, materials, properties and tissue engineering applications	34
Recent developments in bio-scaffold materials as delivery strategies for therapeutics for endometrium regeneration	34
Injectable hyaluronic acid hydrogel loaded with BMSC and NGF for traumatic brain injury treatment	33
ROS-responsive nanoparticles for oral delivery of luteolin and targeted therapy of ulcerative colitis by regulating pathological microenvironment	32
Silk fibroin nanofibers: a promising ink additive for extrusion three-dimensional bioprinting	32
Cell membrane camouflaged biomimetic nanoparticles: Focusing on tumor theranostics	32
Modulation of macrophages by a paeoniflorin-loaded hyaluronic acid-based hydrogel promotes diabetic wound healing	31
Enzyme-mediated one-pot synthesis of hydrogel with the polyphenol cross-linker for skin regeneration	31
Design strategies for adhesive hydrogels with natural antibacterial agents as wound dressings: Status and trends	31
Bio-based and bio-inspired adhesives from animals and plants for biomedical applications	30
Synthetic biology as driver for the biologization of materials sciences	30
Aurora Borealis in dentistry: The applications of cold plasma in biomedicine	30
3D-Printed PCL/Zn scaffolds for bone regeneration with a dose-dependent effect on osteogenesis and osteoclastogenesis	30
Injectable multifunctional CMC/HA-DA hydrogel for repairing skin injury	29
3D-bioprinted peptide coupling patches for wound healing	28
Advances in the development of biodegradable coronary stents: A translational perspective	27
Engineering a naturally derived hemostatic sealant for sealing internal organs	27
Biodegradable, lignin-based encapsulation enables delivery of Trichoderma reesei with programmed enzymatic release against grapevine trunk diseases	27
Electronic textiles: New age of wearable technology for healthcare and fitness solutions	27
ADSC-exo@MMP-PEG smart hydrogel promotes diabetic wound healing by optimizing cellular functions and relieving oxidative stress	27
Harnessing reactive oxygen/nitrogen species and inflammation: Nanodrugs for liver injury	27
Self-assembled porphyrin polymer nanoparticles with NIR-II emission and highly efficient photothermal performance in cancer therapy	26
HIF-1α overexpression in mesenchymal stem cell-derived exosome-encapsulated arginine-glycine-aspartate (RGD) hydrogels boost therapeutic efficacy of cardiac repair after myocardial infarction	26
Functionality-packed additively manufactured porous titanium implants	26
Construction of multifunctional porcine acellular dermal matrix hydrogel blended with vancomycin for hemorrhage control, antibacterial action, and tissue repair in infected trauma wounds	26
Hydrogels as delivery systems for spinal cord injury regeneration	25
Novel fusion peptides deliver exosomes to modify injectable thermo-sensitive hydrogels for bone regeneration	25
Mussel-inspired collagen-hyaluronic acid composite scaffold with excellent antioxidant properties and sustained release of a growth factor for enhancing diabetic wound healing	25
Glucose/ROS cascade-responsive ceria nanozymes for diabetic wound healing	25
Peptide-based delivery of therapeutics in cancer treatment	25
Modification of the surface nanotopography of implant devices: A translational perspective	25
Current status and future potential of wear-resistant coatings and articulating surfaces for hip and knee implants	24
Non-covalent protein-based adhesives for transparent substrates—bovine serum albumin vs. recombinant spider silk	24
Functionalizing multi-component bioink with platelet-rich plasma for customized in-situ bilayer bioprinting for wound healing	24
Anti-inflammatory and antibacterial activities of cerium-containing mesoporous bioactive glass nanoparticles for drug-free biomedical applications	24
Smartphone-based mobile biosensors for the point-of-care testing of human metabolites	23
Collagen fibril formation in vitro: From origin to opportunities	23
Self-assembly of Peptide dendrimers and their bio-applications in theranostics	23
Recent advances on bioactive baghdadite ceramic for bone tissue engineering applications: 20 years of research and innovation (a review)	23
Engineered hyaluronic acid-decorated niosomal nanoparticles for controlled and targeted delivery of epirubicin to treat breast cancer	23
Antibacterial coatings on orthopedic implants	23
Nanomaterial-based biosensor developing as a route toward in vitro diagnosis of early ovarian cancer	22
Progress in the application of sustained-release drug microspheres in tissue engineering	22
Architecting polyelectrolyte hydrogels with Cu-assisted polydopamine nanoparticles for photothermal antibacterial therapy	22
The balanced microenvironment regulated by the degradants of appropriate PLGA scaffolds and chitosan conduit promotes peripheral nerve regeneration	22
Multifunctional polyphenol-based silk hydrogel alleviates oxidative stress and enhances endogenous regeneration of osteochondral defects	21
Dual-functional composite scaffolds for inhibiting infection and promoting bone regeneration	21
Long term expansion profile of mesenchymal stromal cells at protein nanosheet-stabilised bioemulsions for next generation cell culture microcarriers	21
Long-term antibacterial properties of a nanostructured titanium alloy surface: An in vitro study	21

Plasmonic nanosensors for point-of-care biomarker detection	20
Injectable hydrogels in central nervous system: Unique and novel platforms for promoting extracellular matrix remodeling and tissue engineering	20
Designing functional hyaluronic acid-based hydrogels for cartilage tissue engineering	20
Human metabolite detection by surface-enhanced Raman spectroscopy	20
Octahedral Pt-MOF with Au deposition for plasmonic effect and Schottky junction enhanced hydrogenothermal therapy of rheumatoid arthritis	19
Dexamethasone-loaded zeolitic imidazolate frameworks nanocomposite hydrogel with antibacterial and anti-inflammatory effects for periodontitis treatment	19
Platelet lysates-based hydrogels incorporating bioactive mesoporous silica nanoparticles for stem cell osteogenic differentiation	19
3D bioprinting of in situ vascularized tissue engineered bone for repairing large segmental bone defects	19
Catechol-chitosan/polyacrylamide hydrogel wound dressing for regulating local inflammation	19
Biocompatible copper sulfide–based nanocomposites for artery interventional chemo-photothermal therapy of orthotropic hepatocellular carcinoma	19
3D-printed scaffold combined to 2D osteoinductive coatings to repair a critical-size mandibular bone defect	18
Low dose novel PARP-PI3K inhibition via nanoformulation improves colorectal cancer immunoradiotherapy	18
Stem cell membrane-camouflaged targeted delivery system in tumor	18
Localized disruption of redox homeostasis boosting ferroptosis of tumor by hydrogel delivery system	18
A two-in-one Janus NIR-II AIEgen with balanced absorption and emission for image-guided precision surgery	18
Bioactive peptides laden nano and micro-sized particles enriched ECM inspired dressing for skin regeneration in diabetic wounds	18
Functional acellular matrix for tissue repair	18
Sustained release of naringin from silk-fibroin-nanohydroxyapatite scaffold for the enhancement of bone regeneration	18
Design and application of stimuli-responsive DNA hydrogels: A review	18
In-situ formed elastin-based hydrogels enhance wound healing via promoting innate immune cells recruitment and angiogenesis	18
Induction of ferroptosis using functionalized iron-based nanoparticles for anti-cancer therapy	18
Designing of spider silk proteins for human induced pluripotent stem cell-based cardiac tissue engineering	18
Polydopamine, harness of the antibacterial potentials-A review	18
Mechanisms of instantaneous inactivation of SARS-CoV-2 by silicon nitride bioceramic	18
Bilateral double site (calvarial and mandibular) critical-size bone defect model in rabbits for evaluation of a craniofacial tissue engineering constructs	18
In situ forming and biocompatible hyaluronic acid hydrogel with reactive oxygen species-scavenging activity to improve traumatic brain injury repair by suppressing oxidative stress and neuroinflammati	18
Antibacterial smart hydrogels: New hope for infectious wound management	18
Supramolecular assemblies based on natural small molecules: Union would be effective	18
The translational paradigm of nanobiomaterials: Biological chemistry to modern applications	17
The application of 3D bioprinting in urological diseases	17
3D printed gelatin/decellularized bone composite scaffolds for bone tissue engineering: Fabrication, characterization and cytocompatibility study	17
Multifunctional carbon nanomaterials for diagnostic applications in infectious diseases and tumors	17
Dendrimer-based nanohybrids in cancer photomedicine	17
IGF2BP3 is an essential N6-methyladenosine biotarget for suppressing ferroptosis in lung adenocarcinoma cells	17
Bioprinting a skin patch with dual-crosslinked gelatin (GelMA) and silk fibroin (SilMA): An approach to accelerating cutaneous wound healing	17
Microfluidic mechanoporation for cellular delivery and analysis	17
Porcine mesothelium matrix as a biomaterial for wound healing applications	17
In vivo imaging of fluorescent single-walled carbon nanotubes within C. elegans nematodes in the near-infrared window	17
NIR-light-controlled G-quadruplex hydrogel for synergistically enhancing photodynamic therapy via sustained delivery of metformin and catalase-like activity in breast cancer	17
A metastasis-on-a-chip approach to explore the sympathetic modulation of breast cancer bone metastasis	17
Recent advances in decellularized biomaterials for wound healing	17
An ultra-sensitive electrochemical biosensor using the Spike protein for capturing antibodies against SARS-CoV-2 in point-of-care	17
Biomimetic semiconducting polymer dots for highly specific NIR-II fluorescence imaging of glioma	17
An injectable and self-healing hydrogel with dual physical crosslinking for in-situ bone formation	16
Antibacterial Ti–Cu implants: A critical review on mechanisms of action	16
Cerium oxide nanoparticles: Synthesis methods and applications in wound healing	16
Vascularized pulp regeneration via injecting simvastatin functionalized GelMA cryogel microspheres loaded with stem cells from human exfoliated deciduous teeth	16
Accelerating the excisional wound closure by using the patterned microstructural nanofibrous mats/gentamicin-loaded hydrogel composite scaffold	16
Smartphone-integrated colorimetric sensor array-based reader system and fluorometric detection of dopamine in male and female geriatric plasma by bluish-green fluorescent carbon quantum dots	16
Nanocellulose composite wound dressings for real-time pH wound monitoring	16
Cellular reprogramming with multigene activation by the delivery of CRISPR/dCas9 ribonucleoproteins via magnetic peptide-imprinted chitosan nanoparticles	16
3D-printed high-density polyethylene scaffolds with bioactive and antibacterial layer-by-layer modification for auricle reconstruction	15
A minimalist and robust chemo-photothermal nanoplatform capable of augmenting autophagy-modulated immune response against breast cancer	15
Intra-articular nanoparticles based therapies for osteoarthritis and rheumatoid arthritis management	15
Biofabrication of a shape-stable auricular structure for the reconstruction of ear deformities	15
Gold nanomaterials for oral cancer diagnosis and therapy: Advances, challenges, and prospects	15
Bench-to-bedside: Feasibility of nano-engineered and drug-delivery biomaterials for bone-anchored implants and periodontal applications	15
M2 macrophage-derived exosome-encapsulated microneedles with mild photothermal therapy for accelerated diabetic wound healing	15
Exosomes derived from magnetically actuated bone mesenchymal stem cells promote tendon-bone healing through the miR-21-5p/SMAD7 pathway	15
4D-printed bilayer hydrogel with adjustable bending degree for enteroatmospheric fistula closure	15
A 3D bioprinted nano-laponite hydrogel construct promotes osteogenesis by activating PI3K/AKT signaling pathway	15
Engineering hyaluronic acid-based cryogels for CD44-mediated breast tumor reconstruction	15
Promoting endogenous articular cartilage regeneration using extracellular matrix scaffolds	14
Emerging nanosonosensitizers augment sonodynamic-mediated antimicrobial therapies	14
Human urine-derived stem cell exosomes delivered via injectable GelMA templated hydrogel accelerate bone regeneration	14
Functional resveratrol-biodegradable manganese doped silica nanoparticles for the spinal cord injury treatment	14
A novel tropoelastin-based resorbable surgical mesh for pelvic organ prolapse repair	14
Engineering Fe/Mn-doped zinc oxide nanosonosensitizers for ultrasound-activated and multiple ferroptosis-augmented nanodynamic tumor suppression	14
Programming assembly of biomimetic exosomes: An emerging theranostic nanomedicine platform	14
Generation of cytocompatible superhydrophobic Zr–Cu–Ag metallic glass coatings with antifouling properties for medical textiles	14
Mesoporous silicas in materials engineering: Nanodevices for bionanotechnologies	14
An all-silk-derived bilayer hydrogel for osteochondral tissue engineering	14
Cascade-activatable NO release based on GSH-detonated “nanobomb” for multi-pathways cancer therapy	14
Hybridizing gellan/alginate and thixotropic magnesium phosphate-based hydrogel scaffolds for enhanced osteochondral repair	14
A nanosized anionic MOF with rich thiadiazole groups for controlled oral drug delivery	14
Advances in Escherichia coli Nissle 1917 as a customizable drug delivery system for disease treatment and diagnosis strategies	14
PEIGel: A biocompatible and injectable scaffold with innate immune adjuvanticity for synergized local immunotherapy	13
High value valorization of lignin as environmental benign antimicrobial	13
Synergy between silk fibroin and ionic liquids for active gas-sensing materials	13
Brain microvascular endothelial cells derived from human induced pluripotent stem cells as in vitro model for assessing blood-brain barrier transferrin receptor-mediated transcytosis	13

Paper-based plasmonic substrates as surface-enhanced Raman scattering spectroscopy platforms for cell culture applications	13
Cell membrane-coated nanomaterials for cancer therapy	13
Lignocellulose dissociation with biological pretreatment towards the biochemical platform: A review	13
Fusing spheroids to aligned μ-tissues in a heart-on-chip featuring oxygen sensing and electrical pacing capabilities	13
Wearable non-invasive glucose sensors based on metallic nanomaterials	13
The spatial form periosteal-bone complex promotes bone regeneration by coordinating macrophage polarization and osteogenic-angiogenic events	13
Encapsulation of bacterial cells in cytoprotective ZIF-90 crystals as living composites	13
Multi-target tyrosine kinase inhibitor nanoparticle delivery systems for cancer therapy	13
Scaffold-based developmental tissue engineering strategies for ectodermal organ regeneration	13
Biomaterials by design: Harnessing data for future development	12
Blood, sweat, and tears: extraterrestrial regolith biocomposites with in vivo binders	12
Topographically guided hierarchical mineralization	12
Bioinspired sandwich-like hybrid surface functionalized scaffold capable of regulating osteogenesis, angiogenesis, and osteoclastogenesis for robust bone regeneration	12
Bioactive strontium ions/ginsenoside Rg1–incorporated biodegradable silk fibroin-gelatin scaffold promoted challenging osteoporotic bone regeneration	12
3D-printed placental-derived bioinks for skin tissue regeneration with improved angiogenesis and wound healing properties	12
PVA/pectin composite hydrogels inducing osteogenesis for bone regeneration	12
Thermogels containing sulfated hyaluronan as novel topical therapeutics for treatment of ocular surface inflammation	12
Comparative proteomic analysis of human mesenchymal stromal cell behavior on calcium phosphate ceramics with different osteoinductive potential	12
Advanced technologies for molecular diagnosis of cancer: State of pre-clinical tumor-derived exosome liquid biopsies	12
Abdominal wall hernia repair: from prosthetic meshes to smart materials	12
Fabrication of biphasic cartilage-bone integrated scaffolds based on tissue-specific photo-crosslinkable acellular matrix hydrogels	12
Design considerations for advancing data storage with synthetic DNA for long-term archiving	12
Tumor extracellular matrix modulating strategies for enhanced antitumor therapy of nanomedicines	12
Theragnostic application of nanoparticle and CRISPR against food-borne multi-drug resistant pathogens	11
Erythrocyte membrane-camouflaged nanoparticles as effective and biocompatible platform: Either autologous or allogeneic erythrocyte-derived	11
A palette of site-specific organelle fluorescent thermometers	11
Exploring the application and mechanism of sodium hyaluronate in cryopreservation of red blood cells	11
Electrostatic flocking of salt-treated microfibers and nanofiber yarns for regenerative engineering	11
Enhanced fluorescence/magnetic resonance dual imaging and gene therapy of liver cancer using cationized amylose nanoprobe	11
Polymeric nanoparticles in the diagnosis and treatment of myocardial infarction: Challenges and future prospects	11
Blood-brain barrier amenable gold nanoparticles biofabrication in aged cell culture medium	11
Basement membrane properties and their recapitulation in organ-on-chip applications	11
Self-snapping hydrogel-based electroactive microchannels as nerve guidance conduits	11
Bone tumor–targeted delivery of theranostic 195mPt-bisphosphonate complexes promotes killing of metastatic tumor cells	11
Arbutin-modified microspheres prevent osteoarthritis progression by mobilizing local anti-inflammatory and antioxidant responses	11
RETRACTED: Electroactive peptide-based supramolecular polymers	11
A two-phase and long-lasting multi-antibacterial coating enables titanium biomaterials to prevent implants-related infections	11
Horizon of exosome-mediated bone tissue regeneration: The all-rounder role in biomaterial engineering	11
Dual-targeted carbon-dot-drugs nanoassemblies for modulating Alzheimer's related amyloid-β aggregation and inhibiting fungal infection	11
Photo-degradable, tough and highly stretchable hydrogels	11
Bioadhesive eutectogels supporting drug nanocrystals for long-acting delivery to mucosal tissues	11
J-aggregates albumin-based NIR-II fluorescent dye nanoparticles for cancer phototheranostics	11
A ROS-responsive synergistic delivery system for combined immunotherapy and chemotherapy	11
Potential of CO2-laser processing of quartz for fast prototyping of microfluidic reactors and templates for 3D cell assembly over large scale	11
Unlocking the magic in mycelium: Using synthetic biology to optimize filamentous fungi for biomanufacturing and sustainability	11
Granular honeycomb scaffolds composed of carbonate apatite for simultaneous intra- and inter-granular osteogenesis and angiogenesis	11
Engineering osteogenic microenvironments by combination of multilayers from collagen type I and chondroitin sulfate with novel cationic liposomes	10
Current advances in the imaging of atherosclerotic vulnerable plaque using nanoparticles	10
A hydrogel-based in vitro assay for the fast prediction of antibiotic accumulation in Gram-negative bacteria	10
Synergistic hydroxyl radical formation, system XC- inhibition and heat shock protein crosslinking tango in ferrotherapy: A prove-of-concept study of “sword and shield” theory	10
The response of soft tissue cells to Ti implants is modulated by blood-implant interactions	10
Microfluidic platforms for single neuron analysis	10
Nanomaterials assisted exosomes isolation and analysis towards liquid biopsy	10
Interfacial nanoarchitectonics for responsive cellular biosystems	10
Repair of osteochondral defects mediated by double-layer scaffolds with natural osteochondral-biomimetic microenvironment and interface	10
Enhancing resin-dentin bond durability using a novel mussel-inspired monomer	10
Optical diagnostic imaging and therapy for thyroid cancer	10
Platelet-derived extracellular vesicles ameliorate intervertebral disc degeneration by alleviating mitochondrial dysfunction	10
Silica nanocarrier-mediated intracellular delivery of rapamycin promotes autophagy-mediated M2 macrophage polarization to regulate bone regeneration	10
Immunologically modified enzyme-responsive micelles regulate the tumor microenvironment for cancer immunotherapy	10
Bioengineered Co-culture of organoids to recapitulate host-microbe interactions	10
Broad virus inactivation using inorganic micro/nano-particulate materials	10
Design of biopolymer-based hemostatic material: Starting from molecular structures and forms	10
Diethyl sinapate-grafted cellulose nanocrystals as nature-inspired UV filters in cosmetic formulations	9
Nanocomposite hyaluronic acid-based hydrogel for the treatment of esophageal fistulas	9
Biopolymer coating for particle surface engineering and their biomedical applications	9
A mechanical, electrical dual autonomous self-healing multifunctional composite hydrogel	9
Bifunctional scaffolds for tumor therapy and bone regeneration: Synergistic effect and interplay between therapeutic agents and scaffold materials	9
Long-term stabilized amorphous calcium carbonate—an ink for bio-inspired 3D printing	9
Biophysical cues of in vitro biomaterials-based artificial extracellular matrix guide cancer cell plasticity	9
Collagen for neural tissue engineering: Materials, strategies, and challenges	9
Gold nanoclusters-loaded hydrogel formed by dimeric hydrogen bonds crosslinking: A novel strategy for multidrug-resistant bacteria-infected wound healing	9
A tannic acid doped hydrogel with small extracellular vesicles derived from mesenchymal stem cells promotes spinal cord repair by regulating reactive oxygen species microenvironment	9
Bone mineral: A trojan horse for bone cancers. Efficient mitochondria targeted delivery and tumor eradication with nano hydroxyapatite containing doxorubicin	9
The CuO and AgO co-modified ZnO nanocomposites for promoting wound healing in Staphylococcus aureus infection	9
Engineered hydrogels for peripheral nerve repair	9
Precision medicine strategies for spinal degenerative diseases: Injectable biomaterials with in situ repair and regeneration	9
Nano-crosslinked dynamic hydrogels for biomedical applications	9
Engineered M13 phage as a novel therapeutic bionanomaterial for clinical applications: From tissue regeneration to cancer therapy	9
Novel glucose-responsive nanoparticles based on p-hydroxyphenethyl anisate and 3-acrylamidophenylboronic acid reduce blood glucose and ameliorate diabetic nephropathy	9
The combination of a 3D-Printed porous Ti–6Al–4V alloy scaffold and stem cell sheet technology for the construction of biomimetic engineered bone at an ectopic site	9
Systemic delivery of tenofovir alafenamide using dissolving and implantable microneedle patches	9
Aptamer engineering exosomes loaded on biomimetic periosteum to promote angiogenesis and bone regeneration by targeting injured nerves via JNK3 MAPK pathway	9
A multifunctional ATP-generating system by reduced graphene oxide-based scaffold repairs neuronal injury by improving mitochondrial function and restoring bioelectricity conduction	9
Recent advances on nanomaterials for antibacterial treatment of oral diseases	9
A mesoporous polydopamine-derived nanomedicine for targeted and synergistic treatment of inflammatory bowel disease by pH-Responsive drug release and ROS scavenging	9
Antibacterial activity, cytocompatibility, and thermomechanical stability of Ti40Zr10Cu36Pd14 bulk metallic glass	9
Acellular cartilage matrix biomimetic scaffold with immediate enrichment of autologous bone marrow mononuclear cells to repair articular cartilage defects	9
Superior mechanical resistance in the exoskeleton of the coconut crab, Birgus latro	9