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Blood Samples Needed

An NIH study is recruiting healthy African-American, Taiwanese and Japanese adults to donate 1 teaspoon of blood. The samples will be used to test for a platelet membrane glycoprotein (CD36) that is absent from the platelets of a small percentage of individuals from these populations. To be eligible you must be 18 or older. Compensation will be provided. Those interested should contact D.J. McCloskey, 496-5150.

Late Day Eaters and Meal Skippers

Women who eat most of their food in the late afternoon and evening most days of the week are sought for a study on metabolism and eating. Nonsmoking, pre-menopausal female volunteers without major medical problems (normal weight and overweight, ages and 18 and older) are sought for a study on eating and metabolism. Participation requires: keeping a 1-week eating diary and 2 visits (a total of 4-6 hours) including a sub-maximal exercise test, assessment of body composition and metabolic rate. Participants will receive $50, a group lecture on eating and weight management and feedback on their food-intake, body composition and metabolic rate. For more information call Teresa Hughes at the Uniformed Services University of the Health Sciences, (301) 295-1498.

Men Needed for Prostate Study

Healthy black men age 50 and older and other healthy men age 55 and older are needed for the largest-ever prostate cancer prevention study. NCI's Selenium and Vitamin E Cancer Prevention Trial, or SELECT, will determine if these two dietary supplements can protect against prostate cancer, the most common form of cancer, after skin cancer, in men.

Two earlier studies suggested that these supplements may prevent prostate cancer, but this cancer was not the focus of the studies. SELECT is the first to look at the role of these supplements specifically for preventing prostate cancer.

Upon enrollment, men will be assigned by chance to one of four groups. One group will take 200 micrograms of selenium daily plus an inactive capsule, or placebo, that looks like vitamin E. Another group will take 400 milligrams of vitamin E daily along with a placebo that looks like selenium. A third group will take both selenium and vitamin E. And a final group will be given two placebos.

Local sites are George Washington University, Howard University, Annapolis's Anne Arundel Medical Center, Johns Hopkins University and the Washington, D.C., VA Medical Center. For more information call 1-800-4-CANCER.

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