IFNG and T-cell leukemia: Here, we used the two pulmonary epithelial carcinoma cell lines derived from a male (A549) and a female (H1793) patient and the Jurkat T cells, an immortalized line of T lymphocytes derived from a male patient with T-cell leukemia (Gillis and Watson 1980), to determine whether BaP induces IFNγ expression and promoter methylation in these cell lines representing pulmonary and immune epithelial cell models.