FN1 and neoplasm: To investigate the specific localization of untensed Fibronectin fibers with respect to the tumor cell locations, spatial proximity analyses between Cy5‐FnBPA5+ pixels and tumor cells were performed using QuPath.[69] This analysis computes the distance between the center of the cell determined with DAPI stains, and the closest Cy5‐FnBPA5+ pixel (Figure S3, Supporting Information).