. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HEAD REGENERATION IN THE EARTHWORM 469 After healing of the longitudinal incision, transection was made be- tween the fifteenth and sixteenth post-clitellar segments. Two and one- half months later the worm was fixed. The sections reveal little cellular activity other than wound closure and healing. Certain sections show some proliferation of cells from the anterior end of the nerve cord, but give little evidence that a brain might have regenerated. Scries B. Nerve Cord Type 1. Nerve cord of a region behind clitellum replace
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HEAD REGENERATION IN THE EARTHWORM 469 After healing of the longitudinal incision, transection was made be- tween the fifteenth and sixteenth post-clitellar segments. Two and one- half months later the worm was fixed. The sections reveal little cellular activity other than wound closure and healing. Certain sections show some proliferation of cells from the anterior end of the nerve cord, but give little evidence that a brain might have regenerated. Scries B. Nerve Cord Type 1. Nerve cord of a region behind clitellum replaced by nerve cord from head-forming region. Case 60 (Figs. 4 and 23).—The nerve cord of post-clitellar segments 10-17 was replaced by the anterior nerve cord from segments 4— 10 17 ^mrnmrn^^r-. 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
