. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. EFFECTS OF X-IRRADIATION UPON GROWTH 121 lower, reaching a minimum at 40 days when they were only 68% of control weights, and recovering to only 75% by 75 days. A difference between 160 r progeny and controls became evident at 60 days and continued to 75 days. Doses of 20 r or SO r apparent!}- did not produce significant changes at any period. 25- 201 15- cr CD i h- X UJ 10- Q O 0° 5. - Or - 20 r - 80 r - 160r -- 320r 0 26 40 60 75 DAYS POST-PARTURITION FIGURE 2. Irradiation of newborn mice. Unweighted means of male and fema
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. EFFECTS OF X-IRRADIATION UPON GROWTH 121 lower, reaching a minimum at 40 days when they were only 68% of control weights, and recovering to only 75% by 75 days. A difference between 160 r progeny and controls became evident at 60 days and continued to 75 days. Doses of 20 r or SO r apparent!}- did not produce significant changes at any period. 25- 201 15- cr CD i h- X UJ 10- Q O 0° 5. - Or - 20 r - 80 r - 160r -- 320r 0 26 40 60 75 DAYS POST-PARTURITION FIGURE 2. Irradiation of newborn mice. Unweighted means of male and female mean weights for each level of irradiation. Radiation response of females The mean body weights of the female progeny are shown in Table II. Exami- nation of these data shows that the general body weight response of the females to embryonic irradiation was similar to that of the males. At 75 days of age the same treatments that produced significantly lower body weights in the males have pro- duced significantly lower body weights in the females. These treatments were 80 r at 10$ days, 160 r at 14$ and 17$ days, and 320 r at 14$ and 17$ days. It is of interest to examine these treatments more closely over the period from birth to 75 days. For this purpose the ratio of the Mean Treated Weights/Mean Control. 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
