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156 results for “bone histology”
Figure 2 in Bone histology of the Late Pleistocene Prolagus sardus (Lagomorpha: Mammalia) provides further insights into life-history strategy of insular giant small mammals
Figure 2. Bone histology of Ochotona specimens. A–C, Oc. dauurica. A, MSB 215940 (juvenile) showing a cortex formed by FLC and WB. B, MSB 215680 (young adult), with abundant SVs in the outer cortex. Note that microorganisms attacked this region, hiding bone tissues. C, MSB 215953 (adult) with FLC sandwiched between ICL and a scarce LB layer. Note the strong RL (black arrowhead). D, Oc. collaris UAM 63937 (adult), with an extensive deposition of PFB and clear RL (black arrowhead) splitting it from FLC. Notice the presence of one LAG (white arrowhead). E, F, Oc. princeps. E, UAM 35060 (adult), anterior region with PFB surrounded by a FLC full of SOs. F, UAM 113936 (adult), with detail of the PFB region, showing four LAGs (white arrowheads). For abbreviations, see the text. Scale bars equals 100 μm.
Figure 1 in Bone histology of the Late Pleistocene Prolagus sardus (Lagomorpha: Mammalia) provides further insights into life-history strategy of insular giant small mammals
Figure 1. Bone histology of P. sardus specimens. A, B, R129 (juvenile, 0 LAG) showing the anterior region (A) formed by FLC with SVs and POs, and posterior one (B) where a nonCGM was identified (arrowhead). C, GD52 (juvenile, 0 LAG), medial region showing early external deposition of PFB with some SVs. In the inner cortex, WB is visible, as well as FLC with POs and SVs. D, R000 (juvenile, one LAG), posterior region with FLC sandwiched between the ICL and the outer cortex of LB (reversed image). E, R136 (young adult) showing two LAGs (arrowheads). F, A17 (young adult) with three LAGs (arrowheads). G, R30 (juvenile, two LAGs), detail of the lateral region with SOs
Figure 3. A–F in Bone histology of the Late Pleistocene Prolagus sardus (Lagomorpha: Mammalia) provides further insights into life-history strategy of insular giant small mammals
Figure 3. A–F, boxplots of log-transformed geometrical (CA, MA, CA/MA, and CA/TA) and size variables (DAPm and DTm). A–C, Prolagus sardus age categories (J, Y, and A). D–F, adults of Oc. princeps, Oc. collaris, and Oc. dauurica. See Supporting Information, Table S2 for the raw data, including mean and standard deviation for species and age category. G–I, growth trajectories of CA, MA, and TA, considering DTm (size proxy), of P. sardus (N = 15) and Ochotona (N = 13). See Supporting Information, Appendix S1 for statistical results.
Fig. 5 in Shell bone histology of solemydid turtles (stem Testudines): palaeoecological implications
Fig. 5 Thin-sections of Solemydidae aff. Naomichelys sp. Images in a-c and f-h in normal transmitted, d, e and i in crosspolarised, and right side in g in cross-polarized light using lambda compensator. a Peripheral (TMP 90.60.07). b Limb ossicle (FM PR 273). c Shell fragment (TMP 90.60.07). d Close-up of external cortex and ornamentation in peripheral (TMP 90.60.07). e Close-up of external cortex and ornamentation in shell fragment (TMP 90.60.07). f Close-up of cancellous bone of shell fragment (TMP 90.60.07). g Close-up of cancellous bone and internal cortex of shell fragment (TMP 90.60.07). h, i Close-up of cortical bone of limb ossicle (FM PR 273). Abbreviations: CB cancellous bone; ECO external cortex; ICO internal cortex; ISF interwoven structural fibres; LB lamellar bone; lsFB longitudinally sectioned fibre bundles; OP ornamentation pattern; PFB parallel-fibred bone; trFB transversally sectioned fibre bundles
Fig. 2 Sectioned solemydid specimens and resulting binary images used for compactness analysis with Bone Profiler. a in Shell bone histology of solemydid turtles (stem Testudines): palaeoecological implications
Fig. 2 Sectioned solemydid specimens and resulting binary images used for compactness analysis with Bone Profiler. a Solemys vermiculata, costal fragment (MCNA-15047). b Solemys vermiculata, shell fragment (MCNA-15046). c Solemys sp., costal fragment (UPUAM-14001)
Fig. 1 in Shell bone histology of solemydid turtles (stem Testudines): palaeoecological implications
Fig. 1 Selected solemydid taxa used in the present study. a Solemys vermiculata, costal fragment (MCNA-15047). b Solemys sp., costal fragment (UPUAM-14001). c, d Solemydidae aff. Naomichelys sp., peripheral (TMP 90.60.07). e Solemydidae aff. Helochelydra sp., peripheral (MNCN 59503). f Solemydidae aff. Helochelydra, plastral fragment (MNCN 59503). g Plastremys lata, costal fragment (NHMUK R 2251)
Figure 4. Permo-Triassic dicynodont bone histology. A in Do extraordinarily high growth rates in Permo-Triassic dicynodonts (Therapsida, Anomodontia) explain their success before and after the end-Permian extinction?
Figure 4. Permo-Triassic dicynodont bone histology. A, juvenile Dicynodon humerus SAM-PK-K5576d; B, subadult Dicynodon humerus NMQR3633a; C, subadult Lystrosaurus maccaigi ulna NMQR3663b; D, juvenile Lystrosaurus declivis tibia NMQR735b; D, E, adult Lystrosaurus humerus (possibly Lystrosaurus declivis) NMQR3678; F, late subadult Kannemeyeria femur NMQR2674b. Arrows indicate enlarged channels in all genera. Scale bars: D, E = 500 mm; A, B, C, F = 413 mm.
Figure 6. Permo-Triassic eutherapsid bone histology. A in Do extraordinarily high growth rates in Permo-Triassic dicynodonts (Therapsida, Anomodontia) explain their success before and after the end-Permian extinction?
Figure 6. Permo-Triassic eutherapsid bone histology. A, subadult gorgonopsian Scylacops femur SAM-PK-10188; B, adult therocephalian Pristerognathus femur SAM-PK-11557; C, late subadult nonmammalian cynodont Cynognathus femur SAM-PK-K6235a; D, early subadult nonmammalian cynodont Diademodon ulna SAM-PK-K8971c. Enlarged channels are absent from these taxa. Arrows indicate growth rings. Scale bars: B, D = 500 mm; A, C = 413 mm.
Figure 3. Permo-Triassic dicynodont bone histology. A, subadult Cistecephalus ulna NMQR1465b in Do extraordinarily high growth rates in Permo-Triassic dicynodonts (Therapsida, Anomodontia) explain their success before and after the end-Permian extinction?
Figure 3. Permo-Triassic dicynodont bone histology. A, subadult Cistecephalus ulna NMQR1465b; B, early subadult Dicynodontoides tibia NMQR479a; C, adult Rhachiocephalus ulna SAM-PK-3714a; D, subadult Tropidostoma tibia SAM-PK-K9960c; E, adult Oudenodon femur SAM-PK-K4807a; F, adult Aulacephalodon femur NMQR3016. Arrows indicate enlarged midcortical channels in Rhachiocephalus and Aulacephalodon. Scale bars: A, D, E = 500 mm; B, C, F = 413 mm.
Bone Erosions in Rheumatoid Arthritis - Characterization Evaluated by Imaging and Histology
ClinicalTrials.gov study NCT04645381. IPD Sharing: NO. Countries: 1. Publications: 1.
Malignant Myoepithelioma of Bone and Soft Tissues: Diagnostic Imaging and Histology in Relation to Prognosis
ClinicalTrials.gov study NCT06244420. IPD Sharing: NO. Countries: 1. Publications: 2.
Histologic Evaluation of Bone Formation After Alveolar Augmentation by "Sandwich Osteotomy" Procedure for Dental Implants Insertion
ClinicalTrials.gov study NCT00878332. IPD Sharing: Not stated. Countries: 1. Publications: 7.
Data from: Palaeobiology of the early sauropodomorph Mussaurus patagonicus inferred from its long bone histology
Open the record for dataset details and reuse information.
METHODS. Bovine ilia were used in the simulations because their histological structure (a fibrolamellar cortex overlying cancellous bone26) was found to match that of the Triceratops ilium. Bone sections 10 x 50 x 縠 3.0 cm with cortices ranging from 0.5 to 5.5 mm in depth (the range of initial cortical-thickness estimates based on gross morphology) were mounted on a servohydraulic mechanical loading frame (MTS Bionix, Minneapolis) and penetrated with an aluminium-bronze T. rex tooth replica. The replica was cast from an actual adult T. rex maxillary tooth, after casts made from some ofthe deeper bite marks revealed the size and shape of the teeth that had impacted the pelvis8 • The replica was penetrated into the ilia sections at 1 mm s-1 to a depth of 11.5 mm, equivalent to the maximum depth of the deepest ilium bite mark8 • Forces were measured with an MTS 25 N strain-gauge-based axial load cell accurate to 0.2%. The forces increased with increasing penetration depth even after the cortical layer had been perforated and the underlying cancellous bone was being crushed. The increase in force with penetration depth is attributed to a greater cortical surface area coming into contact with the semi-conical penetrator tooth as it descended through the ilia. in Bite-force estimation for Tyrannosaurus rex from tooth-marked bones
METHODS. Bovine ilia were used in the simulations because their histological structure (a fibrolamellar cortex overlying cancellous bone26) was found to match that of the Triceratops ilium. Bone sections 10 x 50 x 縠 3.0 cm with cortices ranging from 0.5 to 5.5 mm in depth (the range of initial cortical-thickness estimates based on gross morphology) were mounted on a servohydraulic mechanical loading frame (MTS Bionix, Minneapolis) and penetrated with an aluminium-bronze T. rex tooth replica. The replica was cast from an actual adult T. rex maxillary tooth, after casts made from some ofthe deeper bite marks revealed the size and shape of the teeth that had impacted the pelvis8 • The replica was penetrated into the ilia sections at 1 mm s-1 to a depth of 11.5 mm, equivalent to the maximum depth of the deepest ilium bite mark8 • Forces were measured with an MTS 25 N strain-gauge-based axial load cell accurate to 0.2%. The forces increased with increasing penetration depth even after the cortical layer had been perforated and the underlying cancellous bone was being crushed. The increase in force with penetration depth is attributed to a greater cortical surface area coming into contact with the semi-conical penetrator tooth as it descended through the ilia.
Data from: Bone histological correlates for air sacs and their implications for understanding the origin of the dinosaurian respiratory system
Air sacs are an important component of the avian respiratory system, and corresponding structures also were crucial for the evolution of sauropod dinosaur gigantism. Inferring the presence of air sacs in fossils so far is restricted to bones preserving internal pneumatic cavities and foramina as osteological correlates. We here present bone histological correlates for air-sacs as a new potential identification tool for these elements of the respiratory system. The analysis of several avian and non-avian dinosaur samples revealed delicate fibers in secondary trabecular and secondary endosteal bone that in the former case (birds) is known or in the latter (non-avian dinosaurs) assumed to have been in contact with air sacs, respectively. The bone histology of this "pneumosteal tissue" is markedly different from those regions where muscles attached presenting classical Sharpey's fibers. The pneumatized bones of several non-dinosaurian taxa do not exhibit the characteristics of this "pneumosteum". Our new histology-based approach thus can be instrumental in reconstructing the origin of air sacs among dinosaurs and hence for our understanding of this remarkable evolutionary novelty of the respiratory system.
Figure 3 in Histological data on bone and teeth in two dragonfishes (Stomiidae; Stomiiformes): Borostomias panamensis Regan & Trewavas, 1929 and Stomias boa Reinhardt, 1842
Figure 3. – Borostomias panamensis (Azan). A: Cross section of a caniniform tooth showing the dentine core (De) and the pulp cavity perfectly circular (pc). In the dentinous tissue, numerous sections of vascular canals are seen (arrowheads). B: Detail of figure 3A. The vascular canals are surrounded by numerous canalicles more or less ramified (arrows), and that housed odontoblastic processes. Scale bars: A = 50 μm; B = 20 μm.
FIGURE 18 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 18. Detailed images of the EFS of the SMA 0087 "Chris" samples. A, EFS of SMA0087 "Chris" femur (r), in which a cycle of faster growth is included (indicated by arrow). B, EFS of SMA 0087 "Chris" tibia (r), in which a cycle of faster growth is present (indicated by arrow). C, EFS of SMA 0087 "Chris" fibula (r), which possesses a cycle of faster growth (indicated by arrow). Images taken under plane-polarized light.
FIGURE 17 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 17. Images of all samples taken from SMA 0087 "Chris". A, femur (r). B, tibia (r). C, fibula (r). For all samples, the bone tissue types are indicated to the left, and the number and patterns of the visible growth cycles are indicated to the right. Abbreviations; E: Bone tissue type E, EFS: External fundamental system, F: Bone tissue type F, MC: Medullary cavity, RA: Remodeled area.
FIGURE 7 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 7. Images of all samples taken from SMA 0015 "David". A, femur (l). B, tibia (l). C, fibula (l). For all samples, the bone tissue types are indicated to the left, and the number and patterns of the visible growth cycles are indicated to the right. Abbreviations; E: Bone tissue type E, EFS: External fundamental system, F: Bone tissue type F, MC: Medullary cavity, RA: Remodeled area.
FIGURE 5 in Testing hypothesis of skeletal unity using bone histology: The case of the sauropod remains from the Howe-Stephens and Howe Scott quarries (Morrison Formation, Wyoming, USA)
FIGURE 5. Images of all samples taken from SMA 0002 "E.T." A, humerus (r). B, femur (l). C, tibia (l). For all samples, the bone tissue types are indicated to the left, and the number and patterns of the visible growth cycles are indicated to the right. Abbreviations; E: Bone tissue type E, EFS: External fundamental system, F: Bone tissue type F, G: Bone tissue type G, MC: Medullary cavity, RA: Remodeled area.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.