Creative Bioarray's Pooled Human Liver S9 Fractions provide a fully characterized, relevant, reliable and reproducible in vitro tool. Pooled Liver S9 Fractions from 200 donors gives an accurate population representation that may be used to describe the metabolic profile of a drug or drug candidate in high-throughput assays as well as the following other uses: Product Link: http://www.creative-bioarray.com/Human-Liver-S9-Fraction-200-Donors-CSC-C4094X-item-2062.htm