TGFB1 and myasthenia gravis: Likewise, in this research, through the ELISAs of human, TGF-β1 has been found that the B cells are capable of producing both TGF-β1 in patients with MG (0.56 ± 0.14) but lesser as compared to HCs (0.95 ± 0.47) (P = 0.031).