. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 10 II FIG. 10. Conjugating cells showing region of the cut. FIG. 11. The right and left halves of a conjugating pair after removal of the anterior end. FIG. 12. Left and right halves of a conjugating pair grafted together. are cut in the vegetative condition. This regularity would indi- cate that the division plane is lost during conjugation, and that when it is re-formed it is laid down in the center of the fragment. In three of the operations the halves were pressed together so firmly by the edge of the knife that the f
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 10 II FIG. 10. Conjugating cells showing region of the cut. FIG. 11. The right and left halves of a conjugating pair after removal of the anterior end. FIG. 12. Left and right halves of a conjugating pair grafted together. are cut in the vegetative condition. This regularity would indi- cate that the division plane is lost during conjugation, and that when it is re-formed it is laid down in the center of the fragment. In three of the operations the halves were pressed together so firmly by the edge of the knife that the fragments grew together at the cut surfaces. These grafted fragments (Fig. 12) showed great activity for a few days, but finally died without dividing. One of these was stained to see the nuclear condition. There was a large single nucleus in each half. If these grafts could be kept and fission induced, the regulation would, no doubt, be of value in throwing light on the problem of the "nucleus-proto- ; F. The Effect of Cutting Cells Shortly after Fission. In order to obtain cells at a definite period in their develop- ment they were removed from the stock culture, and as soon as. 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
