Foreword 
Research Scholars that have further enriched our scientific program. We are especially 
pleased that the Institute's research on problems of medical concern to developing countries 
is extended through the basic studies of a number of these Scholars. The advances toward 
understanding biological processes and disease mechanisms that are described herein move 
us further tovv'ard our goal of the betterment of the human condition. 
Purnell W. Choppin, M.D. 
President 
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