. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. BUD DEVELOPMENT IN COMPOUND ASCIDIANS 527 ms. FIGURE 4. Photographs of histogenesis. (A) Protruding bud of late stage 1, frontal sectioning. Bar = 20 Mm. (B) Inner wall of a developing bud of stage 8, longitudinal sectioning. Bar = 20 MOI. (C) Double- walled pericardium of stage 9, frontal sectioning. Bar = 40 Mm. (D) Neural complex and dorsal ganglion cells of late stage 8, longitudinal sectioning. Bar = 20 nm. (E) Neural complex of stage 9, frontal sectioning. Its anterior half is opened to the pharyngeal chamber and has c
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. BUD DEVELOPMENT IN COMPOUND ASCIDIANS 527 ms. FIGURE 4. Photographs of histogenesis. (A) Protruding bud of late stage 1, frontal sectioning. Bar = 20 Mm. (B) Inner wall of a developing bud of stage 8, longitudinal sectioning. Bar = 20 MOI. (C) Double- walled pericardium of stage 9, frontal sectioning. Bar = 40 Mm. (D) Neural complex and dorsal ganglion cells of late stage 8, longitudinal sectioning. Bar = 20 nm. (E) Neural complex of stage 9, frontal sectioning. Its anterior half is opened to the pharyngeal chamber and has cilia on the luminal surface. Bar = 20 Mm. (F) Dorsal ganglion of stage 11, frontal sectioning. Bar = 20 Mm. ac, atrial chamber; ae, atrial epithelium; af, atrial fold; asa, atrial siphon anlage; b, blood cell; be, branchial chamber; cd, ciliated duct; dg, dorsal ganglion; e, epidermis; en, endostylar placode; ms, mesenchymal space; nc, neural complex; nf, nerve fiber; p, pericardium. vesicle during this stage (cf., Fig. 4C) by inward folding of the cardiac muscle cell domain. The pericardial rudiment was situated to the right of the gut rudiment, mak- ing clearer the bilateral asymmetry of the earlier 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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