Fig. 2From: Transcriptomic analysis on the effects of melatonin in gastrointestinal carcinomasEffect of melatonin on cell growth in HGC-27 and HCT-8 cells. The antitumor effect of melatonin on GC cell line HGC-27 (a) and CRC cell line HCT-8 (b). The cells were treated with melatonin (0, 1, 2, 3, 4, 5 mmol/L) for 24 h, 48 h and 72 h, respectively. Cell viability was assessed by MTS assayBack to article page