title: On the protein constituting 9+2 fibers of the tail of sea-urchin spermatozoa.
mesh_terms: D000818:Animals; D004447:Echinodermata / Q000032:analysis*; D008297:Male; D008854:Microscopy, Electron; D011506:Proteins / Q000032:analysis*; D013094:Spermatozoa / Q000032:analysis*
chemical_list: D011506:Proteins