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toxic tools

‘Slow but sure’ progress toward less toxic tools to fight cancer

John Ryan is just one of the miracles to emerge from the Johns Hopkins cancer unit in Baltimore. An immunotherapy treatment -- highly effective in a minority of patients -- saved his life after a lung cancer diagnosis. The retired military nuclear reactor specialist will celebrate his 74th birthday in July, and his battle with cancer illustrates the promises and failures of immunotherapy, a burgeoning field in which the pharmaceutical industry is investing heavily. Ryan has been able to attend the graduations of three…