Fig. 2

Effects of protocatechuic aldehyde on cell viability in RAW 264.7 cells. The cell viability was measured by MTT method, and the cells were 6th-generation RAW264.7 cells. Data are presented as mean ± SD (n = 4). #p < 0.05, ##p < 0.01, ###p < 0.001 vs controls. *p < 0.05, **p < 0.01, ***p < 0.001 vs LPS group