THY1 and lung carcinoma: To interrogate a human lung cancer database for the presence of Thy-1+ CAFs, we isolated Thy-1+ CAFs and normal lung fibroblasts (LFs) from the lungs of KrasLA1 mice and wild-type littermates, respectively, and performed global proteomic analysis on the murine CAFs and LFs, which identified 425 proteins that were differentially expressed.