. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 610 NORIYUKI SATOH. FIGURE 1. Scanning electron micrograph (SEM) of the dissected 64-cell stage showing the formation of the blastocoel (be), (la) The cells of both hemispheres are of nearly equal height (D, dorsal side; V, ventral side). Bar, 50 nm. (Ib) Cell surface bordering the blastocoel. The cells extend cytoplasmic processes or filopodia onto adjacent cells (arrows). Bar, 5 /*m. The embryo is shown with the anterior end up and the posterior end down in all figures. FIGURE 2. Early gastrula stage viewed from the ventra
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 610 NORIYUKI SATOH. FIGURE 1. Scanning electron micrograph (SEM) of the dissected 64-cell stage showing the formation of the blastocoel (be), (la) The cells of both hemispheres are of nearly equal height (D, dorsal side; V, ventral side). Bar, 50 nm. (Ib) Cell surface bordering the blastocoel. The cells extend cytoplasmic processes or filopodia onto adjacent cells (arrows). Bar, 5 /*m. The embryo is shown with the anterior end up and the posterior end down in all figures. FIGURE 2. Early gastrula stage viewed from the ventral (animal) pole. The ectoderm cells have divided seven times (pb, polar bodies). Bar, 50 /xm. FIGURE 3. Initial gastrula stage viewed from the dorsal (vegetal) pole. Note the reduc- tion of the surface area of the endoderm cells, especially the two cells marked by asterisks. FIGURE 4. Early gastrula stage viewed from the dorsal pole. Emboly of the endoderm cells begins. Asterisks show the two leading cells. Several meso- and endoderm cells are dividing. FIGURE 5. Middle gastrula stage viewed from the dorsal pole. The blastopore (bp) is. 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
