Fig. 6

Pretreatment with 5-aza-dC sensitizes CRC cells to etoposide for a longer period of time. a Treatment scheme. b Cell viability of DLD-1 cells after sequential treatments with 1 μM 5-aza-dC and 5–50 μM etoposide (n = 4). Data are presented as means ± SD normalized to untreated control. Eto - etoposide