Fig. 1

PB2 reduces cell viability of gastric cancer cells. a Chemical structure of PB2. BGC-823 b and SGC-7901 c cells were treated with PB2 (0, 10, 20, 50, 100 and 200 μM) for 48 h. Cell viability was measured by a CCK-8 assay. d BGC-823 and e SGC-7901 cells were incubated with PB2 for 48 h, and the culture media were collected to measure LDH release by colorimetry. Data are represented as the mean ± standard deviation. *P < 0.05, **P < 0.01, ***P < 0.001 vs. control group. PB2, Procyanidin B2; LDH, lactate dehydrogenase