Medicine: MR-I

Just a year ago, two doctors announced that they had isolated a virus which causes one type of common cold (TIME, Jan. 5). It was a good start, but there was a lot of slow work ahead. Drs. Norman H. Topping and Leon T. Atlas, at the National Institute of Health at Bethesda, Md., had to keep testing their virus, called MR-I,* on human volunteers. They put the virus, kept alive in fertilized chicken eggs, into the noses of inmates of District of

Columbia's Lorton Reformatory, then had to wait and see if the...

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