FIG. 1.

PCB congener distribution of Aroclor 1260 (3.7 μg/ml, equivalent to 10 μM) in uninoculated controls and in cultures inoculated with CBDB1. The data shown for CBDB1 are the means for the three cultures that showed the greatest dechlorination after 118 days of incubation. Uninoculated controls showed no changes from Aroclor 1260. The predominant congeners in major peaks are indicated. Congeners marked with asterisks are the four congeners that accumulate to the highest levels in humans (37).