The complex of diseases known as cancer is not only the most feared of human maladies, it is also the most baffling. Man's counterattack against it has produced victories of a sort: 40 years ago, less than one-fifth of all known victims survived five years after diagnosis; now one-third live at least that long. Yet a basic understanding of cancer's causes and cure is still elusiveĀand the casualty list is growing. This year the death count will amount to 339,000 in the U.S. In 1972, according to the National Cancer Institute and the American Cancer Society, the figure will rise to...
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