NUDT1 and non-small cell lung carcinoma: In addition to these findings, authors analyzed MTH1 protein amounts in ten NSCLC cell lines (A549, NCI-H520, NCI-H460, NCI-H1299, NCI-H1975, NCI-H1703, NCI-H661, NCI-H209, NCI-H69 and SK-MES-1), and compared to normal lung cells: CCC-HPF-1 and CCC-HBE-2.