. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. EFFECTS OF X-RAYS ON MOUSE TESTIS 275 In view of the recorded differences in behavior of the sperm fraction of the two strains (see Table I, and Figures 2 and 4), it is unfortunate that 28-day material from strain S was not available. The response over the period of 1-10 days is rather similar. Over the period 10-28 days, strain Ba data indicate a progressive decline to a very low level at 28 days whereas strain S, in contrast, shows a marked increase during the 10-16-day period. IOOCH 500- O a: o o 400H 300- UJ o (T UJ CL 2
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. EFFECTS OF X-RAYS ON MOUSE TESTIS 275 In view of the recorded differences in behavior of the sperm fraction of the two strains (see Table I, and Figures 2 and 4), it is unfortunate that 28-day material from strain S was not available. The response over the period of 1-10 days is rather similar. Over the period 10-28 days, strain Ba data indicate a progressive decline to a very low level at 28 days whereas strain S, in contrast, shows a marked increase during the 10-16-day period. IOOCH 500- O a: o o 400H 300- UJ o (T UJ CL 200- SPERMATID NUCLEI* O—O SPERM HEADS / A—A SERTOLI NUCLEI /. 35 10 16 DAYS AFTER X-RAYS (2560r) FIGURE 4. Strain S. Incidence of spermatids, sperm and Sertoli nuclei at different times following 2560 r of x-rays. The data pertaining to the Sertoli cell fraction indicate that the trend is similar in both strains but differs in magnitude. Thus in the case of strain Ba the rela- tive area occupied by this class undergoes a steady increase over the period 0-5 days at which time the level reached is about times the control. This value then falls to about 2 times the control value by 10 days, and then increases again reaching at 16 days a level about 17 times the control value. In the case of strain S. 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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