Additionally, baicalein dose-dependently increased the number of TH+ neurons, with 27.55% more TH+ neurons in rats treated with 200 mg/kg baicalein and 100.30% more TH+ neurons in those treated with 400 mg/kg baicalein compared with that observed in the PD model rats not treated with baicalein (DAY 42) (Fig. 1d,e). The gene discussed is TH; the disease is Parkinson disease.