. A study of the causes underlying the origin of human monsters : third contribution to the study of the pathology of human embryos . the ovum is filled with magma reticule, andcontains no trace of an embryo nor amnion. No. 311. Ovum, 36 x 30 x 30 mm.; embryo, C. R., mm. Dr. Watson, Baltimore. The walls of the chorion are thin and covered with a fewscattered and irregular villi. Sections show them to be inall stages of degeneration, the large ones with blood-vesselsand a rich syncytium, and the small ones, which are fibrous,devoid of syncytium and infiltrated With leucocytes. Thespaces be
. A study of the causes underlying the origin of human monsters : third contribution to the study of the pathology of human embryos . the ovum is filled with magma reticule, andcontains no trace of an embryo nor amnion. No. 311. Ovum, 36 x 30 x 30 mm.; embryo, C. R., mm. Dr. Watson, Baltimore. The walls of the chorion are thin and covered with a fewscattered and irregular villi. Sections show them to be inall stages of degeneration, the large ones with blood-vesselsand a rich syncytium, and the small ones, which are fibrous,devoid of syncytium and infiltrated With leucocytes. Thespaces between the villi have a considerable amount of bloodbetween them, and where this comes in contact with an activesyncytium the nuclei of the leucocytes are fragmented; else-where they are not. Portions of the main wall of the chorionare very thin, fibrous and devoid of an epithelial the amnion is in contact with the chorion and isoften blended with it. Within the amniotic cavity there is a mass of granularmagma which could be seen through the thin walls of thechorion before it was opened. 302 MALL. [Vol. Fig. 311a.—Ovum covered with ragged villi. X 1^2 times.
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