January 9, 2009 Via Federal Express Document Processing Center (Mail Code 7407M) Room 6428 Attention : 8(e) Coordinator Office of Pollution Prevention and Toxics U.S.

COVANCE> FINAL REPORT `CHROMOSOMAL ABERRATIONS IN HUMAN WHOLE BLOOD LYMPHOCYTES `WITH PFOS AUTHOR Hemalatha Murli, PhD PERFORMING LABORATORY Covance Laboratories Inc.

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