Health Report: May 30, 1994


-- Regulating levels of chemotherapy to reflect the changes in body rhythms that occur during day and night can increase its effectiveness, researchers say. Tumors shrank significantly in half the patients treated this way, compared with 30% of those who received regular therapy. Doctors have discussed the strategy, known as chronotherapy, for at least two decades, but only recently found a practical way to deliver doses linked to body rhythms.

-- Muscular dystrophy researchers have for the first time identified a key molecule involved in forming connections between muscle cells and neurons, thereby affording new insights into why...

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