title: Modification of the dehydrogenase activities of human sperm after freezing in liquid nitrogen.
mesh_terms: D005615:Freezing; D005954:Glucosephosphate Dehydrogenase / Q000378:metabolism*; D006801:Humans; D007770:L-Lactate Dehydrogenase / Q000378:metabolism; D008297:Male; D009584:Nitrogen; D010734:Phosphogluconate Dehydrogenase / Q000378:metabolism*; D013081:Sperm Motility; D013094:Spermatozoa / Q000201:enzymology*; D014021:Tissue Preservation / Q000379:methods
chemical_list: D007770:L-Lactate Dehydrogenase; D010734:Phosphogluconate Dehydrogenase; D005954:Glucosephosphate Dehydrogenase; D009584:Nitrogen