MUC5AC and neoplasm: From the results, we observe that SSLs are associated with enriched immune cell populations (CD3+ cell proportions) in the epithelial region of the tumor tissue [Fig. 4a; T = 2.22, df = 35, P = 0.0332, RESI = 0.15, 95% CI for RESI = (0, 0.52)] and have higher, but a nonsignificant proportion of MUC5AC+ cells in the tumor region [Fig. 4b; T = 1.83, df = 13, P = 0.0902, RESI = 0.20, 95% CI for RESI = (0, 0.97)].