Studi Efek Paparan Dimetil Ftalat, Butylated Hydroxyanisole, dan Nikel(II) terhadap Pembentukan 8-OHdG secara In Vitro dan In Vivo pada Tikus = Study on The Effect of Exposure to Dimethyl Phthalate, Butylated Hydroxyanisole, and Nickel(II) on The Formation of 8-OHdG In Vitro and In Vivo in Rat