. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 184 CLARK, JR., LYNN, YUDIN AND PERSYN gi. FIGURE 15. A light micrograph of an oocyte during the initial stages of cortical rod dissipation. Bar = 50 /tm. FIGURE 16. A higher magnification showing the cortical rods dissipating (arrows). Bar — 10 pan. FIGURE 17. A transmission electron micrograph illustrating the base of a crypt, dis- sociated rod, and numerous small vesicular elements (arrow). Bar = 1 FIGURE 18. A fine structural view of cortical rod (cr) dissociation. Again, vesicular ele- ments are noted along the oo
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 184 CLARK, JR., LYNN, YUDIN AND PERSYN gi. FIGURE 15. A light micrograph of an oocyte during the initial stages of cortical rod dissipation. Bar = 50 /tm. FIGURE 16. A higher magnification showing the cortical rods dissipating (arrows). Bar — 10 pan. FIGURE 17. A transmission electron micrograph illustrating the base of a crypt, dis- sociated rod, and numerous small vesicular elements (arrow). Bar = 1 FIGURE 18. A fine structural view of cortical rod (cr) dissociation. Again, vesicular ele- ments are noted along the oolemma. Bar = 2 /*m. FIGURE 19. A higher magnification of the membrane vesiculation (arrow) occurring directly adjacent to the oolemma. Bar = /am. many ova. Hudinaga (1942) reported that the dissipated cortical rod material is retained as a jelly coat until the second cleavage in P. japonicus. In ova of P. aztecus and P. setiferus, however, introduction of colloidal carbon to a slide of reacted eggs reveals no zone of jelly material after the formation of the hatching. 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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