title: Structure of chromatin in sea urchin embryos, sperm, and adult somatic cells.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000032:analysis; D002843:Chromatin / Q000302:isolation & purification*; D004247:DNA / Q000032:analysis; D004625:Embryo, Nonmammalian / Q000032:analysis; D005260:Female; D008099:Liver / Q000032:analysis; D008297:Male; D051379:Mice; D008970:Molecular Weight; D012617:Sea Urchins / Q000032:analysis*; D013045:Species Specificity; D013094:Spermatozoa / Q000032:analysis*
chemical_list: D002843:Chromatin; D004247:DNA