. A laboratory manual and text-book of embryology. Embryology. E I J Fig. 13.—Maturation and fertilization of the ovum of the mouse. A, C-J, X 500; B X 750. (after Sobotta). A-C, entrance of the spermatozoon and formation of the second polar body. D-E, develop- ment of the pronuclei. F-J, successive stages in the first division of the fertilized ovum. ovum forming no membrane between the production of the first and second polar bodies (Fig. 13 A-D). The second maturation spindle and second polar body are smaller than the first Immediately after the formation of the second polar body, the chrom

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. A laboratory manual and text-book of embryology. Embryology. E I J Fig. 13.—Maturation and fertilization of the ovum of the mouse. A, C-J, X 500; B X 750. (after Sobotta). A-C, entrance of the spermatozoon and formation of the second polar body. D-E, develop- ment of the pronuclei. F-J, successive stages in the first division of the fertilized ovum. ovum forming no membrane between the production of the first and second polar bodies (Fig. 13 A-D). The second maturation spindle and second polar body are smaller than the first Immediately after the formation of the second polar body, the chromosomes resolve themselves into a reticulum and the female pro- nucleus is formed (Fig. 13 D).. 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 Prentiss, Charles William, 1874-1915. Philadelphia, London, W. B. Saunders

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectembryology, bookyear1