Medicine: Capsules, Feb. 8, 1960

¶ After 14 years of negative results, despite the willingness of 6,000 human volunteers to catch cold for science, workers at Britain's famed Common Cold Research Unit (TIME, Sept. 21, 1953) reported that they have isolated what appears to be three strains of common cold virus. They will not grow under the conditions favored by most viruses, but need a cooler and more acid medium (like the lining of human nasal passages). The strains are so choosy that some nourish only in cells from embryonic human kidneys—in which others will not grow at all. Upshot: there are probably so many different...

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