Fig. 3From: Effective preparation of a monoclonal antibody against human chromogranin A for immunohistochemical diagnosisPurification of the anti-CgA mAb. a SDS-PAGE analysis of the purified mAb. Lane 1: Marker (Precision Plus Protein Dual color standards), lane 2: ascites fluid, lane 3–4: the duplicate purified mAb against CgA. b Titers of the purified 4E5 anti-CgA mAb and control antibody were determined by iELISABack to article page