Medical researchers believe they have tracked down the long-sought factor in human blood that gives it a sweeping power to destroy invading germs. Without such built-in protection against infection, man could hardly survive the daily onslaught by billions of microorganisms to which he is exposed. "Something" saves him, but the nature of that something has remained as elusive as the elixir of life.
Dr. Louis Pillemer and a team of researchers at Cleveland's Western Reserve University make no hard claim to have found the final solution to the puzzle. They have isolated, from the blood serum of both man and animals, a...