From the NewYork Time
Medical researchers have made a significant advance in understanding multiple sclerosis, a common neurological disease that causes symptoms ranging from muscle weakness to paralysis.

The disease is one in which the body’s immune system mistakenly attacks the electrical insulation of nerve fibers. The cause is part genetic and part environmental, but researchers trying to identify the relevant genes have endured repeated frustration. Their approach has been to guess what genes might be involved and see if patients have abnormal versions.
In three articles published online yesterday in The New England Journal of Medicine, three teams of researchers say they have identified, by separate routes, new genetic variants that contribute to the disease.

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