hTERT Extends the Life of Human Fibroblasts without Compromising Type I Interferon Signaling
Figure 2
Telomerase activity is detectable in HEL-TERT and HeLa cells but not HEL-299 cells.
HEL-299 (3 population doublings), HEL-TERT (3 population doublings), and HeLa cells were examined for telomerase activity using the TRAP assay. HeLa cells were used as a positive control for telomerase activity. The numbers at the left side of the figure are DNA size markers (bp: base pair).