Reports

Actinomycin D: Uptake by Sea Urchin Eggs and Embryos

Science  16 May 1969:
Vol. 164, Issue 3881, pp. 832-834
DOI: 10.1126/science.164.3881.832

Abstract

Actinomycin D is excluded from unfertilized eggs and developing embryos of the sea urchin Arbacia punctulata until the blastula hatches. The rate of uptake of actinomycin D by embryos doubles as development progresses after hatching to the gastrula stage.

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