Proliferation of cell lines over 14 days. 1X10
5 (1369 and 2295 cell lines) or 2X10
5 (3133 cell lines) cells were seeded in 6-well plates and trypsinized and counted every 48 hours, for 13 days. Experiments were performed in duplicate, and repeated three times. Cell lines derived pre-chemotherapy are represented by an open symbol, cell lines derived post-chemotherapy have a closed symbol. Data shown is the mean ± SD.