Isoenzyme L-lactate:NAD oxidoreductase 1.1.1.27 (known also as lactate dehydrogenase, LDH) is increased in some human diseases (malignant tumors, acute myocardial infarction, schizophrenia, abortions of unknown etiology). In mice, so-called LDH virus is known as perfect parasite, which increases activity of LDH.
Effect of this parasite on the energetic metabolism of cells as well as on the generated electromagnetic field, is intensively studied.