When hundreds of cancer experts and thousands of researchers in assorted biological sciences swarmed into Atlantic City last week, one of the most persistent questions was: Can viruses be convicted of causing human cancer? When the highly technical discussions were over, virus guilt had not yet been proved. But from several laboratories came new-forged links in a damning chain of evidence. Most significantly, after a half-century of working with such lowly creatures as fowl and rodents, the researchers have begun to report suggestive findings in monkeys and men. Examples:
»A virus which occurs naturally in primates (rhesus and related monkeys) has...