Noninsotopic detection of hepatitis C virus in peripheral blood mononuclear cells by reverse transcriptase polymerase chain reaction in situ hybridization: K. Fukuda1), S. Nishiguchi1), T. Kuroki1), H. Morimoto2), M. Sakurai2), S. Otani3), A. Matsuhisa4) and K. Kobayashi1). Third Dept. of Internal Medicine1), Second Dept. of Pathology2) and Second Dept. of Biochemistry3), Osaka City University Medical School, Osaka, Japan, and Dept. of Biological Science Research4), Research & Development Center, FUSO Pharmaceutical Industries, LTD., Osaka, Japan