MSLN and squamous cell carcinoma: MSLN protein levels were not detectable in any of the normal tissues, but clearly in 5 out of 10 lung tumor tissues, i.e. sample pair #1, 3, 5, 9, and 10 in Fig. 1a and b (#1 large cell carcinoma, stage III, #2 large cell carcinoma, stage III, #3 large cell carcinoma, stage III, #4 large cell carcinoma, stage II, #5 large cell carcinoma, stage IV, #6 large cell carcinoma, stage III, #7 squamous cell carcinoma, stage III, #8 squamous cell carcinoma, stage III, #9 squamous cell carcinoma, stage III, #10 adenocarcinoma, stage II).