. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 322 ROBERTS RUGH AND HKLEN CLUGSTON. PLATE II. X-irradiation of the early embryo of Fundnlns hctcroclitits. FIGURE 9. Fertilized egg x-irradiated to 400 r at the one- to two-cell stage and allowed to develop for 10 days. Should be in stage 31 but shows only faint evidence of structural de- velopment, poorer anteriorly than posteriorly. FIGURE 10. Stage 11 from same batch as Figures 11-17 experimentals (expanding blastula at 14 hours) showing normal development at 8 days with head structures straightening out, and well develo
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 322 ROBERTS RUGH AND HKLEN CLUGSTON. PLATE II. X-irradiation of the early embryo of Fundnlns hctcroclitits. FIGURE 9. Fertilized egg x-irradiated to 400 r at the one- to two-cell stage and allowed to develop for 10 days. Should be in stage 31 but shows only faint evidence of structural de- velopment, poorer anteriorly than posteriorly. FIGURE 10. Stage 11 from same batch as Figures 11-17 experimentals (expanding blastula at 14 hours) showing normal development at 8 days with head structures straightening out, and well developed and functioning circulatory system (note heart). FIGURE 11. Stage 11 exposed to 500 r and allowed to develop for 8 days. Development slightly stunted but quite comparable to control in Figure 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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