Archive image from page 66 of The development of the chick. The development of the chick : an introduction to embryology . developmentofchi02lill Year: 1936 DEVELOPMENT PRIOR TO LAYING 49 served that the large marginal cells on each side are continuous with the periblast, and nuclei are found in the periblast both central and peripheral to the zone of junction. The latter forms L :- P » » : ~i â > â .> 9 0'- s «â¦/. V » J> â c ⢠â¢â¢. â¦â¢â¢ ⢠⦠'â ',»'.<: . ⢠⢠. », : . » s a « ⢠⢠» a⬠,.».' ⢠⢠⢠⢠«â¢Â« >'« ⢠'â 'â 'â¢. ⢠s # «> . â¢.⢠F


Archive image from page 66 of The development of the chick. The development of the chick : an introduction to embryology . developmentofchi02lill Year: 1936 DEVELOPMENT PRIOR TO LAYING 49 served that the large marginal cells on each side are continuous with the periblast, and nuclei are found in the periblast both central and peripheral to the zone of junction. The latter forms L :- P » » : ~i â > â .> 9 0'- s «â¦/. V » J> â c ⢠â¢â¢. â¦â¢â¢ ⢠⦠'â ',»'.<: . ⢠⢠. », : . » s a « ⢠⢠» a⬠,.».' ⢠⢠⢠⢠«â¢Â« >'« ⢠'â 'â 'â¢. ⢠s # «> . â¢.⢠Fig. 2L âLongitudinal section of the blastoderm of a pigeon's egg at the time of disappearance of the sperm-nuclei. On the left (anterior) margin, the marginal cells have become open, that is, continuous with the peri- blast, as contrasted with Fig. 20. About 11 hours after fertilization ( ). (After Blount.) 1, Marginal cells. 2, Cone of protoplasm. 3, Marginal periblast. 4, Neck of latebra. 5, Yellow yolk. Fig. 22.âTransverse section through the center of the blastoderm of a pigeon's egg, 14 hours after fertilization ( ). (After Blount.) 1, Marginal cells. 2, Marginal periblast. 3, Nuclei of the subgerminal periblast.


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