. The development of the albino rat, Mus norvegicus albinus. Embryology -- Mammals; Rats. DEVELOPMENT OF THE ALBINO HAT 31 measures cm. and contains four ova in the 4-cell stage, situ- ated at the beginning of the last loop leading to the uterine horn, cm. from the fimbriated end, thus in the fourth seg- ment of the oviduct as of Sobotta's designation. In figure 14 is reproduced a detailed reconstruction of the segment of the oviduct containing the ova, with the convex portion of the wall of this loop, as shown in figure 13, removed. The section re- produced in figure 12, passes throu
. The development of the albino rat, Mus norvegicus albinus. Embryology -- Mammals; Rats. DEVELOPMENT OF THE ALBINO HAT 31 measures cm. and contains four ova in the 4-cell stage, situ- ated at the beginning of the last loop leading to the uterine horn, cm. from the fimbriated end, thus in the fourth seg- ment of the oviduct as of Sobotta's designation. In figure 14 is reproduced a detailed reconstruction of the segment of the oviduct containing the ova, with the convex portion of the wall of this loop, as shown in figure 13, removed. The section re- produced in figure 12, passes through the lower of the three upper ova, shown in reconstruction in figure 14. In the figure of the reconstruction as also in that of the section, is shown the groove in which these three ova lie. The other oviducts con-. Fig. 14 Model of the segment of the right oviduct, rat Xo. 50, 3 days, 1 hour, containing the four ova in the 4-cell stage, the general position of which is shown in figure 13. The convex portion of the wall of the loop containing the ova is removed, so as to expose the lumen. taining 4-ceri stages were reconstructed graphically, beginning with the uterine end. The position of the ova in each is essen- tially as given in the model reproduced in figure 13. 8-cell stage. In rat No. 57, killed 3 days, 17 hours after the beginning of insemination, there are found in the left oviduct, six segmented ova in the 8-cell stage and one segmented ovum in the 11-cell stage. The right ovary and oviduct was injured in the process of embedding and could not be used for sectioning. The ova are spaced, in the loop of the oviduct which terminates in the uterine horn. Six of the segmented o\'a were recon- structed, the seventh was not detected at the time the recon- structions were made. The six models obtained are reproduced. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
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Keywords: ., bookcontributorgerste, bookpublisherphiladelphiapa, bookyear1915
