Western blot analysis of CYP24A1, CYP27A1 and CYP27B1 protein expression in NSCLC and para-carcinoma tissues. CYP24A1, Cytochrome P450 Family 24 Subfamily A Member 1; CYP27A1, Cytochrome P450 Family 27 Subfamily A Member 1; CYP27B1, Cytochrome P450 Family 27 Subfamily B Member 1; NSCLC, non-small cell lung carcinoma.