BROWN UNIVERSITY Providence, Rhode Island + 02912 Division of Biology and Medicine MAY 17 1399 From the desk of M. Boris Rotman Professor of Medical Science 5/1244 eos le vh, < rr biloe to usw fuat mC dio rg lt o¢ a Preehroa€ FP CG . Coen do fue Head ce hyde s C E. cot at Jey Berea HOw, Que cf lieve ele gS? { Dover €» Jest fire icl@a, At lids Deen ely YU? sear PAAR die emg ual ye Ltcertien / A ee RAs ) n Sud! Cella oda P tee Darran phone: (401) 803-3257 © Fax: (401) 863-1971 * E-mail: m_rotman@brown.edu