Effect of RHP and GLGPG on gene expression in RAW264.7 cells. Expression levels of COX-2, iNOS, CCL5/RANTES and CXCL10/IP-10 in RAW264.7 cells stimulated with LPS for 4 h in the presence of 1.2 - 38.7 mg/L (i.e 1.25 -50 μmol/L) of GLGPG (upper panels) or 31.3 - 1000 mg/L RHP (lower panels). Relative gene expression refers to 2-ΔΔCT (see Materials and Methods). Filled symbols on the y-axis indicate the values observed in LPS-stimulated cells (without test substances). * p < 0.05.