Fig. 2.
DNA synthesis ([3H]-thymidine incorporation) in PBMC of patient no. 1 (week 14) stimulated with F(ab′)2 fragments of the autologous monoclonal IgG (•), F(ab′)2 fragments of isotypic control monoclonal IgG (□), and pooled human polyclonal IgG (▵) (cpm of PBMC cultured in medium alone was 130). The values for PPD-(2.5 μg/mL) and ConA (40 μg/mL)-stimulated PBMC were 3,933 and 78,865 cpm, respectively.