title: These problems are common and the solution rests with scientists.
authors.forename: Rupert P
authors.initials: RP
authors.lastname: Amann
authors.forename: James K
authors.initials: JK
authors.lastname: Graham
mesh_terms: D001205:Ascorbic Acid / Q000494:pharmacology*; D002374:Catalase / Q000494:pharmacology*; D015925:Cryopreservation / Q000379:methods*; D006801:Humans; D008297:Male; D012662:Semen Preservation / Q000379:methods*; D013094:Spermatozoa / Q000187:drug effects*
chemical_list: D002374:Catalase; D001205:Ascorbic Acid