. The cell; outlines of general anatomy and physiology. ng the nuclear segments. Similar nuclein bodies, which in literature generally go underthe name of nucleoli, play a very important part in the structure ofthe germinal vesicles of animal egg-cells. These germinal vesicles E 50 THE CELL differ considerably in their structure from the nuclei met with inordinary tissues, as may be seen from Figs. 28, 29, 30. Fig. 28 represents the immature egg of a sea urchin ; if it is ex-amined when alive, an exceedingly coarse network of ratherthick isolated threads can be distinguished. These, as is show
. The cell; outlines of general anatomy and physiology. ng the nuclear segments. Similar nuclein bodies, which in literature generally go underthe name of nucleoli, play a very important part in the structure ofthe germinal vesicles of animal egg-cells. These germinal vesicles E 50 THE CELL differ considerably in their structure from the nuclei met with inordinary tissues, as may be seen from Figs. 28, 29, 30. Fig. 28 represents the immature egg of a sea urchin ; if it is ex-amined when alive, an exceedingly coarse network of ratherthick isolated threads can be distinguished. These, as is shownby their micro-chemical properties, consist chiefly of linin. Thestained material is nearly all collected into a single large roundbody, the germinal sp>>b which lies in a net-knot of the frame-work, where the greatest number of linin threads intersect. In the enormously large germinal vesicles, for which the largeeggs of Fishes, Amphibians, and Reptiles, which are so rich in yolk,nre remarkable, the number of germinal spots increases consider-.
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Keywords: ., bookcentury1800, bookdecade1890, bookidcelloutlines, bookyear1895
