CD40-gp39 interactions play a critical role during allograft rejection: suppression of allograft rejection by blockade of the CD40-gp39 pathway - Larsen, CP; Alexander, DZ; Hollenbaugh, D; Elwood, ET; Ritchie, SC; Aruffo, A; Hendrix, R; Pearson, TC (Transplantation, 1996)