“…The cells were washed twice with Hank's balanced salt solution (HBSS, GIBCO, Grand Island, NY, USA) and resuspended in the same medium at a concentration of 6 x 10 6 cells/ml. The MNC were mixed vol/vol (1 : l) with a 1% suspension of sheep erythrocytes (SRBC) treated with brome/in (EB) [13]. Briefly, 0.5% bromelin (Calbiochem; La Jolla, CA, USA) was added to a 1% suspension of washed SRBC J. R. Quesada et al: AMLR in Lymphoid Malignancies and immediately centrifuged at 500 g for 15 rain.…”