ANTIPROLIFERATIVE ACTIVITY OF RECOMBINANT HUMAN INTERFERON ALPHA2B ON ESTROGEN POSITIVE HUMAN BREAST CANCER MCF-7 CELL LINE - Ningrum, Ratih Asmana; Research Center for Biotechnology, Indonesian Institute of Sciences Jalan Raya Bogor km 46 Cibinong, West Java, Indonesia, 16911 (Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia, 2015)