. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 112 W. A. ANDERSON AND W. R. ECKBERG. FIGURE 1. Surface of an unfertilized egg of Chaetopterus. Note the three regions of the vitelline layer: I = inner dense layer, M = middle layer, G = granules comprising the outer layer. Note also that microvilli (MV) penetrate the vitelline layer completely. Also note the fibrillar jelly coat originating from the tips of the microvilli and the granules of the vitelline layer (arrows). Bar = 1 ^m. FIGURE 2. Tangential section of the vitelline layer and jelly coat of an unfertilized egg.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 112 W. A. ANDERSON AND W. R. ECKBERG. FIGURE 1. Surface of an unfertilized egg of Chaetopterus. Note the three regions of the vitelline layer: I = inner dense layer, M = middle layer, G = granules comprising the outer layer. Note also that microvilli (MV) penetrate the vitelline layer completely. Also note the fibrillar jelly coat originating from the tips of the microvilli and the granules of the vitelline layer (arrows). Bar = 1 ^m. FIGURE 2. Tangential section of the vitelline layer and jelly coat of an unfertilized egg. Symbols are as given in the legend to Figure 1. Note that the granules of the outer region of the vitelline layer 3re numerous between the tips of the microvilli. Bar = 1 FIGURE 3. Longitudinal section of a Chaetopterus sperm. A = acrosome, N = nucleus, M = mitochondrion, C = centriole, F = flagellum. Bar = 1 nm. FIGURE 4. Longitudinal section through the acrosomal region of a Chaetopterus sperm. Note the. 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: 1332px × 1876px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
