MMP7 and idiopathic pulmonary fibrosis: Through time‐lapse imaging, we noted that IPF AOs exhibited rapid initial growth (Figure 1E; Figure S1D, E, Supporting Information), reflecting the progressive nature of fibrotic disease.[10, 21] Additionally, nanoindentation measurements on cells derived from IPF AOs showed increased stiffness of the epithelium (Figure S1F, Supporting Information), falling within the range of an IPF lung.[22, 23] This was accompanied by elevated levels of secreted MMP7, an IPF clinical biomarker[24] (Figure 1F).