The uptake of valine and cytidine by sea-urchin embryos and its relation to the cell surface.
D000818:Animals; D001386:Azides / Q000494:pharmacology; D002247:Carbon Isotopes / Q000378:metabolism; D002454:Cell Differentiation; D002462:Cell Membrane; D003609:Dactinomycin / Q000494:pharmacology; D004140:Dinitrophenols / Q000494:pharmacology; D004447:Echinodermata; D004625:Embryo, Nonmammalian / Q000378:metabolism*; D005306:Fertilization; D066298:In Vitro Techniques; D007700:Kinetics; D009705:Nucleosides / Q000378:metabolism*; D011691:Puromycin / Q000494:pharmacology; D014316:Tritium / Q000378:metabolism; D014633:Valine / Q000378:metabolism*
D001386:Azides; D002247:Carbon Isotopes; D004140:Dinitrophenols; D009705:Nucleosides; D014316:Tritium; D003609:Dactinomycin; D011691:Puromycin; D014633:Valine