SUMO1 and SUMO1P3 expression in patients with lung squamous cell carcinoma (LUSC) in different stages or with different therapeutic responses. (A, D) SUMO1 (A) and SUMO1P3 (D) expression in patients with LUSC at different stages (B, C, E, F) SUMO1 (B, C) and SUMO1P3 (E, F) expression in patients with LUSC with different therapeutic responses after primary therapy (B, E) or after follow-up therapy (C, F).