Figure 1

Induction of the expression of PPAR by doxycycline in established cell lines. A, B, C and D, Nuclear extracts (50 μg protein/lane) from each cell line cultured in the presence of the indicated amounts of Dox for 5 days were subjected to SDS-PAGE and immunoblots were performed with anti-PPARα (A), anti-PPARδ (B) or anti-PPARγ (C and D).