. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. "1 C. ' • r kj -» H FIGURE 6. A, B, C. Transverse sections through tadpoles of Stage IV; A, anterior. B. In region of oral siphon. C. In region of atrial siphon. About 200 X. D. Section through part of muscle hand; middle cell through center of muscle cell, lateral cell through peripheral cyto- plasm where myonbrillae are formed. About 850 X. E. Transverse section through Stage II to show atrial invaginations. 300 X. /;. Longitudinal section through Stage III. About 150 X. G. Tadpole just before hatching, chorion not ru
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. "1 C. ' • r kj -» H FIGURE 6. A, B, C. Transverse sections through tadpoles of Stage IV; A, anterior. B. In region of oral siphon. C. In region of atrial siphon. About 200 X. D. Section through part of muscle hand; middle cell through center of muscle cell, lateral cell through peripheral cyto- plasm where myonbrillae are formed. About 850 X. E. Transverse section through Stage II to show atrial invaginations. 300 X. /;. Longitudinal section through Stage III. About 150 X. G. Tadpole just before hatching, chorion not ruptured. About 250 X. H. Tadpole at hatching. Note insertion of notochonl at posterior end of trunk. About 250 X. ad. p., adhesive papilla; at., atrium; at. in., atrial invagination; at. .?., atrial siphon; end., endostyle; int., intestine; i)i. c., muscle cell; notochonl; or. . oral siphon; pharynx; p. c., pericardial cavity; stomach; ^. v., sensor}- vesicle; v, y., visceral 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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