Figure 1: A & B Cluster analysis via UPGMA (Dice Sorensen’s similarity index) of (A) benzene bacterial DGGE profiles and (B) hexadecane bacterial DGGE profiles. UB=unlabeled 12C benzene, LB=labeled 13C benzene, UH=unlabeled 12C hexadecane, LH=labeled 13C hexadecane, Txh=Time in hours, A-B-C=replicate samples, boxes represented excised bands and corresponding number.