Medicine: Anatomists & Biologists

Lined up in the fight against cancer last week were sunlight and a dye called phloxine. At Washington's Carnegie Institution young John F. Menke removed some cancer tissue from rats, put it in small glass vessels. There it lived and grew in a culture of the rats' blood. He added some phloxine, a dye closely related to mercurochrome. Nothing happened. Then he exposed the vessels to strong sunlight for five minutes. Activated by the light, the dye attacked the cancer cells, withered them in 30 to 180 minutes. But certain normal cells imbedded in the cancer tissue lived. Researcher Menke's heart...

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