passages.id: split_1_test_2584_passage
passages.type: progene_text
passages.text: The possible role of abnormal T cell - dependent B-cell activation in Graves ' disease was investigated by comparing lymphocyte subset distribution and the production of soluble CD8 ( sCD8 ) , sCD23 , IL-10 and IL-12 by peripheral blood cells ( PBMC ) and thyroid - infiltrating lymphocytes ( TL ) in vitro .