Complex sentence: Large amount of nitric oxide produced in the body that results in disrupting the cell can lead to autoimmune diseases like insulin-dependent diabetes mellitus, allergic encephalomyelitis, and possibly multiple sclerosis.
Split into simpler sentences: Large amount of nitric oxide produced in the body can result in disrupting the cells. This can lead to autoimmune diseases like insulin-dependent diabetes mellitus, allergic encephalomyelitis, and possibly multiple sclerosis.