(F) NSCLC tissues at staged IIIB-IV had higher positive expression of HSP27 than those at stages IIA- IIIA; NSCLC, non-small cell lung cancer; LAC, adenocarcinoma of the lung; LSCC, squamous cell carcinoma of the lung; T, the size of the tumor mass; N, node stage (TNM classification). The gene discussed is HSPB1; the disease is lung adenocarcinoma.