MD-1 is required for cell surface expression of RP105.

Spleen cells from wild-type (A, B), RP105-deficient (C, D), or MD-1–deficient (E, F) mice were stained with anti-RP105 mAb RP/14 (left column) or anti–MD-1 mAb MD14 (right column), followed by goat anti–rat IgG-FITC. Stained cells were analyzed on FACScan. Gray lines show the histograms obtained from cells stained with the second reagent alone.