[The selective reduction of nitro compounds by E. coli cells].

Nitroreduction of 2,4-dinitro-5H-11-p-R-phenyl-[b,f]-1,4-diazepines and 4-(2'-R-3',5'-dinitro)benzoyl-3,4-dihydroquinoxalinones-2 by E. coli with formation of 2-nitro-4-amino-11-p-R-phenyldibenzo-[b,f]-1,4-diazepines and 4-(2'-R-3'-nitro-5'-amino)-benzoyl-3,4-dihydroquinoxalinones-2 has been demonstrated using a set of physical and chemical methods.