. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. No. 4-] BULLA SOLITARIA. 153 these changes in the wall are taking place, the centrosome becomes much enlarged and assumes an elliptical shape. Im- mediately after these breaks appear, there is a small part of the medullary area which takes a plasma stain. This area is somewhat triangular in shape and occurs at the end of the centrosome between the central corpuscle and the broken periphery of the centrosome. New astral rays are formed which extend to the central corpuscle. The old astral rays can be seen disappearing at this
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. No. 4-] BULLA SOLITARIA. 153 these changes in the wall are taking place, the centrosome becomes much enlarged and assumes an elliptical shape. Im- mediately after these breaks appear, there is a small part of the medullary area which takes a plasma stain. This area is somewhat triangular in shape and occurs at the end of the centrosome between the central corpuscle and the broken periphery of the centrosome. New astral rays are formed which extend to the central corpuscle. The old astral rays can be seen disappearing at this stage in the cytoplasm. Fifth stage (Fig. 12). The central corpuscle of the second polar spindle has enlarged and is still ^differentiated. The pieces of the periphery of the old centrosome have become. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
