Smith P K, Nerland D E, Sonnenfeld G
J Interferon Res. 1983;3(2):219-22. doi: 10.1089/jir.1983.3.219.
Gamma interferon (IFN-gamma), induced by sensitization of mice with Mycobacterium bovis strain BCG followed by challenge with tuberculin, was partially purified by adsorption on silicic acid. Administration of the partially purified IFN-gamma to mice significantly depressed levels of liver microsomal cytochrome P-450 to an equivalent extent as crude IFN-gamma.