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Boaz Shaanan . Phone: (972)2-658-5241/5411 *
Dept. of Biological Chemistry . Fax: (972)2-658-6448 or 666-804 *
The Institute of Life Sciences . *
The Hebrew University of Jerusalem . E-mail: boazsh at vms.huji.ac.il *
Givat-Ram, Jerusalem 91904, ISRAEL . *
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