Comparison of the results of the TRAP assay in six cases of NHLs (lanes 1 through 6) and in six reactive hyperplastic lymph nodes (lanes 7 through 12). Note that all cases have similar levels of telomerase activity. Lane T is a positive control (Val cell line). Lane R corresponds to RNase A pretreated sample from the Val cell line and lane N corresponds to a negative control (without CHAPS extracts).