TGFB1 and neoplasm: Tumor cells expressed LAP (TGFβ1) in 10 of 35 cases of control GCs (Fig. 8-2 in Appendix 2, right), of which 5 cases showed positivity in more than 10% of carcinoma cells, and the other 5 cases showed positivity in less than 10% of carcinoma cells.