title: Semen LDH-X deficiency and male infertility.
abstract: Sperm-specific isozyme LDH-X (LDH-C4) in the semen of some infertile men with a normal sperm concentration was absent. This finding suggests a need for semen LDH-X isozyme determination in the evaluation of some causes of male infertility.
mesh_terms: D006801:Humans; D007248:Infertility, Male / Q000175:diagnosis / Q000201:enzymology*; D007527:Isoenzymes; D007770:L-Lactate Dehydrogenase / Q000032:analysis*; D008297:Male; D012661:Semen / Q000201:enzymology*; D013094:Spermatozoa / Q000166:cytology / Q000201:enzymology
chemical_list: D007527:Isoenzymes; D007770:L-Lactate Dehydrogenase