. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CA-45 UPTAKE BY SEA URCHIN EGGS 201 up various quantities of radiocalcium are shown in Figure 4. This figure shows that of the 15 groups of radioactive eggs analyzed, no group showed significantly different content of total calcium from the average value of all the groups, although the radioactivity of the highest group was about 340 times that of the lowest. It also shows that increase in Ca45 taken into the eggs was not followed by increase cr> cn 0) 800 700 c o E 600 500 400 Eggs without jelly coats E CL O > o. 300-
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CA-45 UPTAKE BY SEA URCHIN EGGS 201 up various quantities of radiocalcium are shown in Figure 4. This figure shows that of the 15 groups of radioactive eggs analyzed, no group showed significantly different content of total calcium from the average value of all the groups, although the radioactivity of the highest group was about 340 times that of the lowest. It also shows that increase in Ca45 taken into the eggs was not followed by increase cr> cn 0) 800 700 c o E 600 500 400 Eggs without jelly coats E CL O > o. 300- 200- ntact eggs Washing FIGURE 2. Decrease in radiocalcium in sea urchin eggs after washing with detergent solution (Sterox SK). in total calcium. Total calcium fluctuated independently of the Ca45 content of the eggs about a mean value of jug per mg. dry weight. The calcium content of ordinary, , unincubated, eggs was not lower than that of radioactive eggs. This indicates that there is no calcium accumulation, but an exchange of ordinary Ca40 for radioactive Ca45 leaving the total calcium content more or less 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
