. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. N. J. BERRILL. 0-1 mm FIG. 4. Early development of bud. A. Maximal disc (stage 2), from left side. B. Hemisphere stage, from right side. C. Closed vesicle (stage 3), from right side, with gonads extruded from wall. D. Continued gonad segregation, stage viewed from ventral aspect. E. Formation of atrial folds and intestinal outgrowth (stage 4), from ventral side. F. (Stage 5.) Origin of heart, intestine and neural vesicle, and completion of subdivision of vesicle into central pharyngeal chamber and lateral atrial sacs, from v
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. N. J. BERRILL. 0-1 mm FIG. 4. Early development of bud. A. Maximal disc (stage 2), from left side. B. Hemisphere stage, from right side. C. Closed vesicle (stage 3), from right side, with gonads extruded from wall. D. Continued gonad segregation, stage viewed from ventral aspect. E. Formation of atrial folds and intestinal outgrowth (stage 4), from ventral side. F. (Stage 5.) Origin of heart, intestine and neural vesicle, and completion of subdivision of vesicle into central pharyngeal chamber and lateral atrial sacs, from ventral side. The succeeding stage (stage 6) is shown on the same scale as Fig. 1, B. af, atrial fold; as, atrial sac; lit, heart; nv, neural vesicle; s, stalk; st, stomach; v, epidermal ampullary 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: 1449px × 1724px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
