And so that means we can basically restart another cycle of glycolysis. So we see that lactate dehydrogenase catalyzes the reduction of pyruvate into lactic acid at the same time and oxidizes NADH into NAD plus. Now, if we examine the quadrantary structure of lactate dehydrogenase LDH, we're going to see that it consists of four individual polypeptide chains. And inside our body, in the human body, we have two types of these polypeptide chains that can constitute lactate dehydrogenase. So humans have two isozymic chains for lactate dehydrogenase. We have the H ISome chain and we have the misozyme chain.