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575 results for “embryonic development”
Figure 6 in Breaking through the eggshell: embryonic development of the premaxillary dentition in Lacerta agilis (Squamata: Unidentata) with special emphasis on the egg tooth
Figure 6. The egg tooth of Lacerta agilis at developmental stage 34. A, stereomicroscope photomicrograph of the anterior palate. B, 3D reconstruction of the snout, anterior semi-transparent view. C, 3D reconstruction of the palate, anteroventral view. D, scanning electron micrograph of the anterior palate and the egg tooth surface (inset). Scale bars: 100 μm; 1 μm for inset in D.
Figure 2 in Breaking through the eggshell: embryonic development of the premaxillary dentition in Lacerta agilis (Squamata: Unidentata) with special emphasis on the egg tooth
Figure 2. Transverse histological section through the snout of a Lacerta agilis embryo, stained with AZAN trichrome; developmental stage 28. A, section at the level of the facial prominence fusion (arrows). B, section at the level of the nasal plug, anterior to A. Scale bars: 50 μm.
Figure 5 in Breaking through the eggshell: embryonic development of the premaxillary dentition in Lacerta agilis (Squamata: Unidentata) with special emphasis on the egg tooth
Figure 5. Transverse histological section through the snout of Lacerta agilis at developmental stage 32, stained with H&E. A, middle part of the developing egg tooth. B, anterior part of the developing egg tooth. C, posterior part of the developing egg tooth. D, premaxillary regular teeth at bud stage, section posterior to C. Scale bars: 50 μm; 25 μm for inset in B.
Figure 9 in Breaking through the eggshell: embryonic development of the premaxillary dentition in Lacerta agilis (Squamata: Unidentata) with special emphasis on the egg tooth
Figure 9. The premaxillary teeth of Lacerta agilis at developmental stage 35. A, labiolingual histological section through the egg tooth showing the forming attachment tissue (asterisks), stained with AZAN trichrome. B, labiolingual histological section through the egg tooth showing the forming attachment tissue (asterisks), stained with H&E. C, 3D reconstruction of the palate, non-transparent (left) and semitransparent (right) view. D, sagittal cutaway of the anterior snout. E, labiolingual histological section through the regular premaxillary tooth and forming the subsequent premaxillary teeth (arrow), stained with AZAN trichrome. F, labiolingual histological section through the regular premaxillary teeth and primordium of the egg tooth successor (arrowhead), stained with H&E. Scale bars: 50 μm for histological sections; 100 μm for 3D reconstructions.
Figure 1 in Breaking through the eggshell: embryonic development of the premaxillary dentition in Lacerta agilis (Squamata: Unidentata) with special emphasis on the egg tooth
Figure 1. Distribution of the egg tooth (teeth) and caruncle in amniotes. The snout drawings, except for Unidentata (based on this study), are based on the literature: Gekkota (Hermyt et al. 2020b), Sphenodon, turtle (Fioroni 1962), bird (Wang et al. 2017), crocodilian (García 2007), and monotreme (Fenelon et al. 2023). Silhouettes are from http://phylopic.org/. Note that this simplified phylogenetic tree assumes the existence of the molecular clades Unidentata (Burbrink et al. 2020) and Archelosauria (Crawford et al. 2015).
Figure 13 in Breaking through the eggshell: embryonic development of the premaxillary dentition in Lacerta agilis (Squamata: Unidentata) with special emphasis on the egg tooth
Figure 13. The developmental sequences of the egg tooth, the most advanced regular premaxillary teeth, and the most advanced maxillary teeth.
Figure 12 in Breaking through the eggshell: embryonic development of the premaxillary dentition in Lacerta agilis (Squamata: Unidentata) with special emphasis on the egg tooth
Figure 12. The premaxillary teeth of Lacerta agilis at developmental stage 36. A, 3D reconstruction of the anterior palate including semitransparent view (right). B, labiolingual histological section through the largest regular premaxillary tooth and higher magnification of the collagen fibres of the forming attachment tissue (asterisks in the inset), stained with AZAN trichrome. C, labiolingual histological section through the regular premaxillary teeth showing a reversal line (arrows) between the alveolar bone and premaxilla, stained with H&E. D, labiolingual histological section through the successor of the egg tooth, stained with AZAN trichrome. E, labiolingual histological section through the successor of the egg tooth, stained with H&E. F, transverse histological section through the snout at the level of maxillary and premaxillary dental laminae apposition, stained with H&E. Scale bars: 200 μm in A; 50 μm in B–F.
Figure 8 in Breaking through the eggshell: embryonic development of the premaxillary dentition in Lacerta agilis (Squamata: Unidentata) with special emphasis on the egg tooth
Figure 8. The egg tooth of Lacerta agilis at developmental stage 35. A, stereomicroscope photomicrograph of the anterior snout, left lateral view (mirrored), early developmental stage 35. B, stereomicroscope photomicrograph of the anterior snout, left lateral view (mirrored), at late developmental stage 35. C, stereomicroscope photomicrograph of the anterior palate, early developmental stage 35. D, stereomicroscope photomicrograph of the anterior palate, late developmental stage 35. E, scanning electron micrograph of the anterior palate, late developmental stage 35. F, magnification of the area from the box in E showing the egg tooth. G, magnification of the area from the box in F showing the small bulges (arrowheads) on the lateral border of the egg tooth. Scale bars: 200 μm in A–D; 50 μm in E, F; 5 μm in G.
Scale invariance in early embryonic development
<p>Data and analysis accompanying the paper:</p> <p>"Scale invariance in early embryonic development" </p> <p>Milos Nikolic, Victoria Antonetti, Feng Liu, Gentian Muhaxheri, Mariela D. Petkova, Martin Scheeler, Eric M. Smith, William Bialek and Thomas Gregor. </p> <p>arxiv.org/abs/2312.17684</p>
Figure 6. Stage 3, about 48–50 h in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 6. Stage 3, about 48–50 h development: (A) general view of embryo, dorsal side; (B) rudiments of carapace and second antenna; (C) rudiments of postabdominal claws; (D) general view, ventral side; (E) head of embryo; (F) maxillae I and mandibles. Scale bars: (A, D) 50 mm; (B, C, E, F) 25 mm.
Figure 5. Stage 2, about 45–47 h in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 5. Stage 2, about 45–47 h development: (A) general view of embryo, dorsal side; (B) posterior end of embryo; (C) rudiments of thoracic limbs; (D) rudiments of mandibles and maxillae I; (E) ovary. Scale bars: (A) 100 mm; (B–E) 50 mm.
Figure 2. Stage 1, about 31–33 h in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 2. Stage 1, about 31–33 h development: (A) general view of embryo, dorsal side; (B) posterior end of embryo, dorsal view; (C) anterior end, dorsal view; (D) the same, ventral view; (E) rudiment of second antennae; (F) rudiments of thoracic limbs. Scale bars: (A) 50 mm; (B–F) 25 mm.
Figure 12 in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 12. First juvenile stage: (A) head and thorax; (B) abdomen and postabdomen; (C) eye; (D) swimming setae of second antenna. Scale bars: (A, B) 100 mm; (C, D) 25 mm.
Figure 11. Stage 4, about 69–75 h in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 11. Stage 4, about 69–75 h development: (A) ovaries; (B) heart and carapace, lateral view; (C) heart, dorsal view; (D) carapace and maxillar gland. Scale bar: 25 mm.
Figure 8. Stage 3, about 56 h in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 8. Stage 3, about 56 h development: (A) general view of embryo, dorsal side; (B) eye capsule, beginning of pigmentation; (C) rudiment of carapace; (D) ovary. Scale bars: (A) 50 mm; (B–D) 25 mm.
Figure 7. Stage 3, about 53–55 h in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 7. Stage 3, about 53–55 h development: (A) dorsal organ; (B) 'maxillary processes' of the first thoracic limbs; (C) thoracic limbs; (D) maxillae I and mandibles; (E) proximal segment of first thoracic limb; (F) gut. Scale bars: 25 mm.
Figure 4. Stage 2, about 41 h in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 4. Stage 2, about 41 h development: (A) general view of embryo, dorsal side; (B) the same, ventral side; (C) anterior end of embryo, ventral side; (D) rudiments of second antenna and thoracic limbs. Scale bars: (A, B) 50 mm; (C, D) 25 mm.
Figure 10. Stage 4, about 60 h in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 10. Stage 4, about 60 h (A), 69 h (B), and 64 h (C–F) development: (A, B) eye; (C) first antennae; (D) mouth parts; (E) lateral lobe of lower lip; (F) seta natatoriae. Scale bars: 25 mm.
Figure 1 in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 1. (A) Parthenogenetic egg; (B) gamogenetic egg taken from brood pouch; (C) remains of shed outer egg membrane of parthenogenetic egg; (D) parthenogenetic egg; (E) gamogenetic egg. Scale bars: (A–C) 50 mm; (D, E) 20 mm.
Figure 3. Stage 1 in Comparative investigation of the late embryogenesis of Leptodora kindtii (Focke, 1844) (Crustacea: Branchiopoda), with notes on types of embryonic development and larvae in Cladocera
Figure 3. Stage 1, (A,B) about 35 h development, (C,D) about 39 h development. (A) maxillae I and II; (B) rudiment of second antenna, ventral view; (C) general view of embryo, dorsal side; (D) mandibles and thoracic limbs. Scale bars: (A, B, D) 25 mm; (C) 50 mm.
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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
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
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.