title: Seminal urea level and sperm count.
mesh_terms: D002452:Cell Count; D006801:Humans; D007248:Infertility, Male; D008297:Male; D012661:Semen / Q000032:analysis*; D013094:Spermatozoa; D014508:Urea / Q000032:analysis*
chemical_list: D014508:Urea