Embryology of insects and myriapods; Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching embryologyofinse00joha Year: 1941 362 EMBRYOLOGY OF INSECTS AND MYRIAPODS on the inside the cell wall has not been completed. After they reach the periplasm, some of the nuclei migrate back into the yolk where they become the yolk cells, or vitellophags, as indi- cated by DuBois (1932). Before the inner cell walls of the Fig 313 âSciara Section of de- \ eloping blastoderm, foui hours old. (cc) Cleavage cells, (gc) Ge
Embryology of insects and myriapods; Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching embryologyofinse00joha Year: 1941 362 EMBRYOLOGY OF INSECTS AND MYRIAPODS on the inside the cell wall has not been completed. After they reach the periplasm, some of the nuclei migrate back into the yolk where they become the yolk cells, or vitellophags, as indi- cated by DuBois (1932). Before the inner cell walls of the Fig 313 âSciara Section of de- \ eloping blastoderm, foui hours old. (cc) Cleavage cells, (gc) Germ cells. iy) Yolk. Fig. 314.âSciara Cioss section of de- veloping blastoderm four and one-half hours old. {cc) Cleavage cells, (y) Yolk. blastodermal cells are formed, the germ cells migrate inward, passing separately between the blastodermal cells (Fig. 313). They lie just inside '^'â ^r^ ?^ gc- 'i?fiMk Fig. 315.âSciara. Longitudinal section of posterior pole of egg. (gc) Germ cells, (os) Oosome. the blastoderm at the posterior end of the egg. At about the tenth hour, when the germ cells and the vitellophags have completed their inward
Size: 1647px × 1214px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
