. The development of the chick; an introduction to embryology. Birds -- Embryology. Fig. 16. — Five stages of the cleavage of the hen's egg. (After KolHker.) A. First cleavage furrow (x 14). The egg came from the lower end of the oviduct. B. Four-celled stage (x 17); from the uterus. C. Ten central and eleven marginal cells (x about 16). D. Nine central and sixteen marginal cells (x about 16). E. Late cleavage stage (x about 22).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illus

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. The development of the chick; an introduction to embryology. Birds -- Embryology. Fig. 16. — Five stages of the cleavage of the hen's egg. (After KolHker.) A. First cleavage furrow (x 14). The egg came from the lower end of the oviduct. B. Four-celled stage (x 17); from the uterus. C. Ten central and eleven marginal cells (x about 16). D. Nine central and sixteen marginal cells (x about 16). E. Late cleavage stage (x about 22).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lillie, Frank Rattray, 1870-1947. New York, Holt

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