title: Structural specializations in the flagellar plasma membrane of opossum spermatozoa.
mesh_terms: D000818:Animals; D002462:Cell Membrane / Q000648:ultrastructure; D005614:Freeze Fracturing; D008297:Male; D009893:Opossums / Q000033:anatomy & histology*; D013077:Sperm Head / Q000648:ultrastructure; D013082:Sperm Tail / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*