TGFB1 and gastric neoplasm: As expected, the supernatants of the gastric tumor SH-10-TC cells produced a large amount of TGF-β1; (5 × 105 cells/ml SH-10-TC cultured supernatants (72 h) = 0.81 ± 0.01 ng/ml; Figure S8A) and induced Foxp3+ Tregs generation in vitro (Figures S2A, B).