<prompt> Which is predominant in normal healthyhuman ?LDH 1LDH2LDH 3LDH4  <response>: Ans. is b i.e., LDH2 IsoenzymeSubmit compositionIssuePercentage in serrumLDH IHHHMyocardium, RBC30LDH2HHHMMyocardium, RBC35LDH3HHMMBrain, Kidney20LDH4HMMMSkeletal muscle, Liver10LDH 5MMMSkeletal muscle, Liver5 