Proliferation of ESCC-LECs in different groups before and after transfection. A: Proliferation (OD values) of ESCC-LECs in different groups. *P<0.05, compared with group D. #P<0.05, compared with group A. B: Proliferation curves of ESCC-LECs (n=3). (A) Mixed culture medium group, (B) M2 macrophage group, (C) KYSE150 group, and (D) control group. C: After transfection, the proliferation (OD values) of ESCC-LECs cultured in conditioned culture medium. *P<0.05, compared with group Z4; #P<0.05, compared with group Z1. D: After transfection, the proliferation curves of ESCC-LECs (n=3). (Z1) Post-transfection mixed culture medium group, (Z2) post-transfection M2 macrophage group, (Z3) post-transfection KYSE150 group, and (Z4) control group.