Blocking of cytotoxicity against autologous PHA-stimulated lymphoblasts by PBMCs with monoclonal antibodies.

Lysis of the target cells was measured using a standard⁵¹Cr release assay at an 80:1 effector–target ratio. Cytotoxicities are presented as mean ± SD of 3 patients (patients 3, 7, 8). CLIP, class II–associated invariant chain peptide. HLA, human leukocyte antigen.