Percent of total singlet splenocytes expressing CD11c, CD3, CD19lo, and CD19hi following in vitro incubation for 72 hours with media, 25 µM free PLP139–151, 4-arm PLP139–151, and 4-arm PLP139–151 + 25 µM free PLP139–151. Data is presented as mean ± SD. N=3, * represents significance from 25 µM free PLP139–151. # represents significance from Media.