Leonard M. Hendrickson

LEONARD M. HENDRICKSON has been President and Chief Executive Officer of
BioSource International, Inc., since October 15, 2001. He has been a
Director of BioSource since October 1993. Prior to his position with the
company, Mr. Hendrickson was President of Isotope Products Laboratories
from February 1992 to October 2001. From February 1990 to January 1992,
Mr. Hendrickson served as the Principal Consultant for Microchemics, a
marketing and business development consulting firm that he founded. Mr.
Hendrickson holds a Bachelor of Science degree from the University of
Pennsylvania and a Master’s in Business Administration from American
University in Washington, DC.