. FiG. 29—Maternal (bottoiiO and Fetal (top) Cotyledons of Cow partly detached. A portion of the uterine wall seen at bottom and of choriom at top. stances constitute a menace by threatening to invade the new individual mixed with nutritive substances, through a common portal, the external layer of the morula. The nu- trition needs to be more dependable, abundant, and imme- diate, and guarded as far as possible against contamination from every source. The uterine seal hermetically closes the cervical canal to direct invasion from the vagina. Since the ovarian end of the genital tube, though op
. FiG. 29—Maternal (bottoiiO and Fetal (top) Cotyledons of Cow partly detached. A portion of the uterine wall seen at bottom and of choriom at top. stances constitute a menace by threatening to invade the new individual mixed with nutritive substances, through a common portal, the external layer of the morula. The nu- trition needs to be more dependable, abundant, and imme- diate, and guarded as far as possible against contamination from every source. The uterine seal hermetically closes the cervical canal to direct invasion from the vagina. Since the ovarian end of the genital tube, though opening into the
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectveterin, bookyear1921
