File:Paracentrotus lividus cleavage stadia.jpg
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| Description | FIGURE 4. Early cleavage stages of Paracentrotus lividus under light microscopy. Developmental stages are as follows: (A) unfertilized egg (oocyte); (B) zygote (or 1-cell stage) (1-cell); (C) 2-cell stage (2-cell); (D) 4-cell stage (4-cell); (E) 8-cell stage (8-cell); (F,G) 16-cell stage (16-cell); (H,I) 28-cell stage (28-cell); (J,K) 32-cell stage (32-cell); (L,M) 56-cell stage (56-cell); (N,O) 60-cell stage (60-cell). In (A–F,H,J,L,N), the embryos are in lateral view with the animal pole up. In (G,I,K,M,O), the embryos are in vegetal view. In (A), arrows highlight the equatorial pigment band. In (B), the arrowhead marks the fertilization envelope. In (F–K), dots in blue, orange, and red respectively indicate: the mesomeres, the macromeres, and the micromeres. In (H–O), asterisks in dark blue, light blue, yellow, orange, brown, and red respectively mark: the an1, an2, veg1, and veg2 cells as well as the large and the small micromeres. The schematic legend below the images illustrates cell lineage relationships. Scale bar: (A–O) 30 μm. an: animal; veg: vegetal. |
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https://www.frontiersin.org/articles/10.3389/fcell.2022.966408/full Developmental atlas of the indirect-developing sea urchin Paracentrotus lividus: From fertilization to juvenile stages, Front. Cell Dev. Biol., 31 October 2022 Sec. Morphogenesis and Patterning Volume 10 - 2022, https://doi.org/10.3389/fcell.2022.966408 |
| Author | Laurent Formery, Axel Wakefield, Maeva Gesson, Ludovic Toisoul, Guy Lhomond, Laurent Gilletta, Régis Lasbleiz, Michael Schubert, Jenifer C. Croce1 |
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| current | 21:32, 4 March 2024 | | 1,282 × 870 (1.05 MB) | Rasbak (talk | contribs) | {{Information |description=FIGURE 4. Early cleavage stages of ''Paracentrotus lividus'' under light microscopy. Developmental stages are as follows: (A) unfertilized egg (oocyte); (B) zygote (or 1-cell stage) (1-cell); (C) 2-cell stage (2-cell); (D) 4-cell stage (4-cell); (E) 8-cell stage (8-cell); (F,G) 16-cell stage (16-cell); (H,I) 28-cell stage (28-cell); (J,K) 32-cell stage (32-cell); (L,M) 56-cell stage (56-cell); (N,O) 60-cell stage (60-cell). In (A–F,H,J,L,N), the embryos are in later... |
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