Dextran uptake by CCL21-DC. DC (A and B) and CCL21-DC (C and D) were incubated with DX-FITC at 4°C and 37°C for 15 minutes, as described in Materials and Methods. DX expression was analyzed in CD86+ DC. A population of DX+ CD86+ obtained at 4°C and at 37°C is shown. Values indicate the percentage and MFI of DX+ CD86+. Density plots of a representative experiment of three are shown.