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Figure 14 | Neural Development

Figure 14

From: Neurogenesis in the central olfactory pathway of adult decapod crustaceans: development of the neurogenic niche in the brains of procambarid crayfish

Figure 14

A model for the development of the niche in the marbled crayfish brain. (A) Overview of the embryonic brain just before hatching. Neuroblasts (NBs) (blue circle) and their progeny (red circle) are present and patchily dispersed in the brain. The boxed area shows two alternatives conerning neuroblast division in the embryonic brain. (B) Magnification of the rectangular area outlined in A) To show the transverse band of cells at E90%. (C) The protoniche and deutocerebral proliferative system at POI and POII stages. (D) The Deutocerebral proliferative system in the adult crayfish brain. Abbreviations: 1st, 2nd, and 3rd, first, second, and third generation progenitors; 9, cell cluster 9 (local olfactory interneurons); 10, cell cluster 10 (olfactory projection neurons); GN, medial giant neuron; LPZ, lateral proliferation zone; M, cell in M-phase; MPZ, medial proliferation zone; POI, post-embryonic stage I; POII, post-embryonic stage II; S, cell in S-phase; X, neuroblast X.

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Neural Development

ISSN: 1749-8104