Source Science Daily: Cleveland Clinic researchers have discovered a new subtype of multiple sclerosis (MS), providing a better 
understanding of the individualized nature of the disease.
MS has long been characterized as a disease of the brain’s white matter, where immune cells destroy myelin — the fatty protective covering on nerve cells. The destruction of myelin (called demyelination) was believed to be responsible for nerve cell (neuron) death that leads to irreversible disability in patients with MS. Read on.