Protein Synthesis in Micromeres of the Sea Urchin Egg

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Science  11 Mar 1966:
Vol. 151, Issue 3715, pp. 1233-1234
DOI: 10.1126/science.151.3715.1233


A method was developed for isolating large quantities of micromeres from the 16-cell stage of the sea urchin, and measurements were made of their ability to incorporate C14-L-valine into protein as compared with that of a mixed suspension of micromeres, mesomeres, and macromeres. Per cell, the rate of incorporation was considerably less for the micromeres than for the suspension of mixed cells. Per unit volume, however, the two types of suspensions showed no significant differences.