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Fig. 4. A projection reconstruction of the medial aspect of H87 as if cut in the midsagittal plane

Only nervous system and gut are represented. The cut surfaces are indicated by hatching. The primordia are indicated as in figure 3. a.i.p., anterior intestinal portal; h.b.2, second subdivision of the hindbrain; N .T. , closed region of neural tube; or.memb., oral membrane; ph., pharynx;, posterior neuropore; por.g., preoral gut; Rk.p., Rathke’s pouch; som.II, these letters indicate position and extent of second somite; thy., thyroid evagination. Other abbreviations as in figure 3. X 120.

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Bartelmez GW. The origin of the otic and optic primordia in man. (1922) J. Comp. Neural., 34: 201-232.

Cite this page: Hill, M.A. (2024, June 13) Embryology Bartelmez1922-fig04.jpg. Retrieved from

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