. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 530 C. OBATA AND S. NEMOTO of polar bodies formed. Moreover, two types of abnormal eggs were sometimes found; namely eggs with three polar bodies, and others with a single, distinctly large-sized polar body (Fig. 5, E-F) measuring ± /urn (n = 16) in diameter. The first polar body in control eggs measured ± jim, n = 16. As in treatment II, polar body formation occurred after the treated eggs had been returned to NSW. Caffeine and other methylxanthines used here inhibit cytokinesis in a variety of cells (Chene
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 530 C. OBATA AND S. NEMOTO of polar bodies formed. Moreover, two types of abnormal eggs were sometimes found; namely eggs with three polar bodies, and others with a single, distinctly large-sized polar body (Fig. 5, E-F) measuring ± /urn (n = 16) in diameter. The first polar body in control eggs measured ± jim, n = 16. As in treatment II, polar body formation occurred after the treated eggs had been returned to NSW. Caffeine and other methylxanthines used here inhibit cytokinesis in a variety of cells (Cheney, 1948; Roper, 1977; Stallwood and Davidson, 1977; Beetham and Tolmach, 1982). The present results show that caffeine also inhibits the meiotic division of starfish oocytes. Delage (1901) also reported that some parthenogenetic agents suppress polar body formation in Asterias glacialis oocytes. o A B. 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
