Fig. 1

Serum FST levels in patients with lung cancer as compared with the healthy subjects and the patients with benign lung diseases. Serum FST levels (pg/mL) in the healthy subjects (HSs) (n = 37), patients with benign lung diseases (BLD) (n = 22) and patients with lung cancer (LC) (n = 91). Asterisks indicate values that are significantly different compared to that in the healthy group (***P < 0.001, ****P < 0.0001)