title: Characterization of spawn-inducing factors in the sea urchin, Strongylocentrotus purpuratus.
mesh_terms: D000818:Animals; D007447:Invertebrate Hormones / Q000302:isolation & purification; D008297:Male; D008970:Molecular Weight; D010446:Peptide Fragments / Q000032:analysis; D010455:Peptides / Q000302:isolation & purification; D012098:Reproduction; D012617:Sea Urchins / Q000502:physiology*; D013737:Testis / Q000502:physiology
chemical_list: D007447:Invertebrate Hormones; D010446:Peptide Fragments; D010455:Peptides