Harliansyah Abdul Hanif Noor Azian Murad Wan Zurinah Wan Ngah Yasmin Anum Mohd Yusof 2005Effects of Zingiber officinale on Superoxide Dismutase, Glutathione Peroxidase, Catalase, Glutathione and Malondialdehyde Content in HepG2 Cell Line