The distribution of: A) 4-OH-PCB 8 and B) 4-PCB 8 sulfate, in N27, SH-SY5Y, and HepG2 cells as determined by HPLC analysis. Cells were treated with 25μM (2.5nmol) compound for 24h, and subjected to analysis of the extracellular media and intracellular contents. The treatment compound is annotated with an arrow. The values shown are the means ± SE, n=3.