title: Fusion of bull and human sperm with Nicotiana protoplasts.
mesh_terms: D000818:Animals; D002417:Cattle; D002459:Cell Fusion; D006801:Humans; D006822:Hybrid Cells; D008297:Male; D010944:Plants / Q000648:ultrastructure; D010947:Plants, Toxic; D011523:Protoplasts / Q000648:ultrastructure; D013094:Spermatozoa / Q000648:ultrastructure; D014026:Nicotiana / Q000648:ultrastructure