To which disease does the loss of CD28 expression by liver-infiltrating T cells contribute?
['Loss of CD28 expression by liver-infiltrating T cells contributes to pathogenesis of primary sclerosing cholangitis.', 'Loss of CD28 expression by liver-infiltrating T cells contributes to pathogenesis of primary sclerosing cholangitis', 'Loss of CD28 expression by liver-infiltrating T cells contributes to pathogenesis of primary sclerosing cholangitis.']
['Loss of CD28 expression by liver-infiltrating T cells contributes to pathogenesis of primary sclerosing cholangitis.', 'Loss of CD28 expression by liver-infiltrating T cells contributes to pathogenesis of primary sclerosing cholangitis. ', 'loss of cd28 expression by liver-infiltrating t cells contributes to pathogenesis of primary sclerosing cholangitis.']
['Primary sclerosing cholangitis']