title: Reversibility of sterilization produced by vas occlusion clip.
mesh_terms: D000818:Animals; D004285:Dogs; D008297:Male; D008722:Methods; D013094:Spermatozoa; D013245:Sterilization, Reproductive / Q000295:instrumentation; D013635:Tantalum; D014649:Vas Deferens / Q000601:surgery*
chemical_list: D013635:Tantalum