Induction of TH protein by TCDD exposure inN2a-Rβ cells. TH protein (56 kDa) in N2a-Rβ cells was detected by Western blotting using an anti-TH antibody (open triangle). The expression of TH protein was increased in TCDD-exposed N2a-Rβ cells as compared to DMSO. Lane M shows molecular weight markers (kDa). Data represent triplicate experiments.