title: [Effect of caffeine and kallekrein on sperm motility].
mesh_terms: D002110:Caffeine / Q000494:pharmacology*; D006801:Humans; D007610:Kallikreins / Q000494:pharmacology*; D008297:Male; D010781:Photography / Q000379:methods; D013081:Sperm Motility / Q000187:drug effects*
chemical_list: D002110:Caffeine; D007610:Kallikreins