ENHANCEMENT OF ANTI-HEPATITIS C VIRUS ACTIVITY BY THE COMBINATION OF CHALEPIN FROM RUTA ANGUSTIFOLIA AND CURRENT ANTIVIRAL DRUGS: Tutik Sri Wahyuni1,2, Adita Ayu Permanasari2; Aty Widyawaruyanti1, Achmad Fuad Hafid1,2 , Hiroyuki Fuchino3, Nobuo Kawahara3 and Hak Hotta4. SEATROPH 2021, 51 (1), 18-25.