After burial, the body goes through the remaining stages of decomposition. Because the body is protected by a casket and layers of soil, the natural decomposition process is slowed. After autolysis, microorganisms in the body digest tissue, leak enzymes and produce gas that causes the body to bloat and skin to become discoloured. After that, organs, muscles, and skin become liquified, and eventually, all that remains is hair, bones, and cartilage.