Real-time polymerase chain reaction was used to investigate the gene expressions of hTERT, Skp2, TTF-1 as in the PB of 60 patients with NSCLC and 20 benign lung diseases.
Immunohistochemistry was used to study the expression of GATA-6 and thyroid transcription factor 1 in lung specimens from different age groups of human and baboon fetuses and newborns with lung disease.