Observations on the development of the sea urchin embryos in the presence of actinomycin.
D000818:Animals; D002454:Cell Differentiation / Q000187:drug effects; D004247:DNA / Q000096:biosynthesis; D003609:Dactinomycin / Q000494:pharmacology*; D004447:Echinodermata / Q000196:embryology; D004625:Embryo, Nonmammalian / Q000187:drug effects*
D003609:Dactinomycin; D004247:DNA