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The oscillations of clock genes DBP and Bmal1 but not Per 1 are suppressed in db/db mice aorta. Male 16-wk-old db/db and control mice were taken down at Zeitgeber time 23 or 11 (ZT 23 or ZT 11, ZT0: light on, ZT 12: light off). Aortas were immediately removed, and mRNA levels of the clock genes DBP (A), Bmal1 (B), and Per1 (C) were determined by real-time PCR. *P < 0.05; **P < 0.01; and ***P < 0.001.
