Orengo, A In vivo incorporation of labeled amino acids into nuclear proteins of the sea urchin embryos. [electronic resource] - Experimental cell research Oct 1970 - 331-7 p. digital Publication Type: Journal Article ISSN: 0014-4827 Standard No.: 10.1016/0014-4827(70)90562-8 doi Subjects--Topical Terms: Amino Acids--analysisAnimalsCarbon IsotopesCell DifferentiationCell Nucleus--metabolismChromatographyDNA--analysisEchinodermata--metabolismElectrophoresisEmbryo, Nonmammalian--metabolismFemaleHistones--analysisMethodsNucleoproteins--analysisOvum--metabolism