Medicine: Against Clots & Rats

Arthur D. Schulte, son of the developer of the Schulte national chain of cigar stores, was making rapid strides in his father's footsteps when, at 32, he fell ill with thrombophlebitis—inflammation of leg veins, with formation of clots that could be fatal if they reached the lungs. That was 20 years ago. Schulte's physician, Dr. Irving Wright, casting around for a drug to prevent clot formation (none had yet been proved effective in man), appealed to Nobel Prizewinner Charles H. Best, co-discoverer of insulin. He wanted some of the heparin that University of Toronto laboratories had just begun to extract from...

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