Figure 1. Cell viability of HL-60 (A, C) and Jurkat (B, D) cells treated with caffeic acid (CAF) and chlorogenic acid (CL) for 24 hours, as assessed using the neutral red uptake assay. Negative control (NC) = PBS; Solvent control (SC) = 0.4% DMSO; Positive control (PC) = 100 μM methyl methanesulfonate. Results are expressed as mean ± SD of three independent experiments.

*p<0.05 vs. negative control (Student's t test).