Medicine: Calculated Kiss

As science professor in a Baltimore high school, Bacteriologist Arthur H. Bryan found himself stumped by an obvious question: "Is kissing dangerous?" Physicians, it seemed, had not given much thought to the problem, yet to Dr. Bryan so fundamental a question seemed worthy of serious scientific inquiry. So he called for volunteers.

Those who thought they were signing up for a controlled petting party soon learned their mistake. Dr. Bryan persuaded youths and adults of both sexes to plant their lips firmly against sterile glass slides or gooky agar plates while he held a stop watch. After intervals ranging from two to...

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