MUC5AC and neoplasm: Recent studies suggest that secretory mucins MUC5AC and MUC5B are aberrantly expressed in tumor tissues and associated with distant metastases and poor survival in LUAD patients.[31] MUC5B staining reveals enhanced deposition in S‐AlgLung hydrogels (Figure 3d) in line with significantly increased expression of MUC5AC and MUC5B genes (Figure 3e).