title: A method for obtaining pure mitochondrial preparation from sea urchin sperms.
mesh_terms: D000818:Animals; D002458:Cell Fractionation / Q000379:methods; D002467:Cell Nucleus / Q000648:ultrastructure; D002499:Centrifugation, Density Gradient / Q000379:methods; D008297:Male; D008854:Microscopy, Electron; D008928:Mitochondria / Q000648:ultrastructure*; D012617:Sea Urchins; D013094:Spermatozoa / Q000648:ultrastructure*