passages.id: split_6_test_2671_passage
passages.type: progene_text
passages.text: It has been reported recently that L-ficolin / P35 associates with mannan - binding lectin ( MBL ) - associated serine proteases ( MASP-1 and - 2 ) and MBL - associated protein 19 ( MAp19 ) in serum and forms complexes able to activate complement .