Detoxification effects of T. laurifolia Lindl. against cadmium toxicity : Eighteen rats were randomized into three groups of six rats. The positive control group (group 1) was injected subcutaneously with 1.2 mg/kg BW CdCl2 solution for 5 days/week for 4 weeks followed by water orally for the next 28 days. The leaf extract treatment group (group 2) was injected with CdCl2 solution as for the positive control group. Then after CdCl2 injection was completed, the group was fed daily with the leaf extract for 4 more weeks. Rats in group 3 were injected with CdCl2 solution and fed the leaf extract twice a day at the same frequency as the CdCl2 injections (20 doses over 28 days). This experimental design was expected to test the antagonistic effect of the leaf extract.