Good health carries with it some kind of immunity to cancer; even when cancer cells are injected or implanted under the skin of a healthy person, they die off and cause no disease. Cancer patients lack this immunity, and cancer cells from another victim will grow for a while in their bodies. Researchers at Manhattan's Sloan-Kettering Institute discovered these two basic facts years ago by injecting cancer cells into themselves, into prisoner-volunteers at the Ohio Penitentiary in Columbus, and into cooperating patients with advanced cancer, at Manhattan's Memorial Hospital. But a nagging question remained: Is this lack of immunity peculiar...
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