Cell-specific loss of cytochrome P450 2B1 in rat lung following treatment with pneumotoxic and non-pneumotoxic trialkylphosphorothioates11Abbreviations: CYP, cytochrome P450; TMPT1, O,O,S-trimethylphosphorothioate; TMPT2, O,S,S-trimethylphosphorodithioate; TMPT3, O,O,S-trimethylphosphorodithioate; and PROD, pentoxyresorufin O-dealkylase