Evan's blue-stained intradermal injection sites showing the kinetics of the dermal inflammatory response to exogenous human recombinant RANTES 20 ng/50 μL (no. 2) and 10 ng/50 μL (no. 3); while PBS 50 μL was a negative control (no. 1) and LPS 10 ng/50 μL is a positive control (no. 4). This representative experiment was found to be reproducible and has been performed at least three times.