title: Fractionation and analysis of nuclear proteins in sea urchin embryos.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002466:Cell Nucleolus / Q000032:analysis*; D004447:Echinodermata; D004586:Electrophoresis; D004625:Embryo, Nonmammalian; D006657:Histones / Q000032:analysis; D008722:Methods; D009698:Nucleoproteins / Q000032:analysis* / Q000302:isolation & purification
chemical_list: D000596:Amino Acids; D006657:Histones; D009698:Nucleoproteins