Figure 4From: Antitumor activity and macrophage nitric oxide producing action of medicinal herb, Crassocephalum crepidioides Effects of C. crepidioides and isochlorogenic acid on the expression of iNOS mRNA in RAW264.7 cells. (A, C) RAW264.7 cells were incubated with C. crepidioides (500 μg/ml) (A) or isochlorogenic acid (500 μg/ml) (C) for the indicated time periods. (B, D) RAW264.7 cells were cultured with various concentrations of C. crepidioides (B) or isochlorogenic acid (D) for 3 h. iNOS mRNA expression was detected by RT-PCR.Back to article page