Medicine: The Life of Stress

The experiment seemed to be a dismal failure. The young researcher at Montreal's McGill University had been injecting ovarian hormone extracts into rats, hoping to find evidences of a new hormone. Instead, after careful autopsies, he found only evidences of poisoning such as he got with injections of substances picked at random from the laboratory shelves. The rats' adrenal glands were enlarged, the thymus wasted away and the stomach ulcerated. Dr. Hans Selye concluded sadly that he had been wasting his time. Then it struck him: none of the substances which he had injected had directly caused death, but all...

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