Now, our own cells are not the only cells that utilize lactic acid lactic acid fermentation. Many bacterial cells that infect our body and many other organisms utilize lactic acid fermentation. For instance, three important bacterial cells that utilize lactic acid fermentation to basically generate ATP are the following. So we have Closetridium tetani, closetium botulinum and Closetridium per fringes. So Closetridium tetani is that bacteriosat that causes tetanus in humans, also known as lockjaw. We have Clostridium botulinum, which is actually the most toxic bacteria in the world.