PDIA6 and neoplasm: The presence of both AGR2–PDIA3 and AGR2–PDIA6 complexes was observed inside the tumor cells, both transfected with expression plasmid for AGR2 (H1299-AGR2 cells; supplemental Fig. S5, A–D), and producing AGR2 endogenously (T47D cells, Fig. 4C and A549 cells, supplemental Fig. S5, E and F).