title: Cyclic change in polyamine concentrations in sea urchin eggs related with cleavage cycle.
mesh_terms: D000818:Animals; D002455:Cell Division; D004625:Embryo, Nonmammalian; D005260:Female; D005306:Fertilization; D010063:Ovum / Q000378:metabolism*; D011700:Putrescine / Q000378:metabolism*; D012617:Sea Urchins / Q000378:metabolism; D013095:Spermidine / Q000378:metabolism*; D013096:Spermine / Q000378:metabolism*; D013997:Time Factors
chemical_list: D013096:Spermine; D013095:Spermidine; D011700:Putrescine