CYP1A1 and GST expression of hepatocytes induced by 7,12-dimethylbenz(a)anthracene and the influence of ethanolic extract of Gynura procumbens - Hamid, Iwan Sahrial; Faculty of Pharmacy, Universitas Airlangga Surabaya (Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia, 2016)