. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 3. Formation of bud. A. Part of circumference of mature egg drawn to same scale for comparison of size. B, C. Surface view and optical section of initial disc (stage 1). D. Optical section of maximal disc (stage 2). E, F. Arching of disc to form sphere or vesicle. G. Bud vesicle beginning to close proximally, and showing lateral segregation of four cells destined to become mature ova, extruded into space between inner and epidermal vesicles. H. Later stage (stage 3) with vesicle closed, epidermal ampullary vessel protru
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 3. Formation of bud. A. Part of circumference of mature egg drawn to same scale for comparison of size. B, C. Surface view and optical section of initial disc (stage 1). D. Optical section of maximal disc (stage 2). E, F. Arching of disc to form sphere or vesicle. G. Bud vesicle beginning to close proximally, and showing lateral segregation of four cells destined to become mature ova, extruded into space between inner and epidermal vesicles. H. Later stage (stage 3) with vesicle closed, epidermal ampullary vessel protruding distally, three presumptive mature ova and a number of male cells all extruded from the lateral wall of the vesicle, to lie outside it. A similar condition exists on the opposite side of the vesicle, not shown in the figure. cp, epidermis; cr/>, atrial 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
Size: 1553px × 1610px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
