Figure 1. Soluble TGF-β expression in B-cell NHL.

(A) TGF-β serum levels measured by ELISA in untreated FL patients (mean: 27.67+/−13.2, n = 10) and healthy donors (median: 30.76+/−9.47 pg/ml, n = 10; p = 0.56). (B) TGF-β levels in culture supernatants of freshly-isolated malignant B (B, n = 11) and intratumoral T cells (T, n = 5) from B-cell NHL treated with (A) or without (R) PMA/Ion measured by ELISA. (C) A representative graph showing TGF-β levels in culture supernatants of B and T cell lines treated with (Stim) or without (Unstim) PMA/Ion measured by ELISA (n = 3).