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Genes expressed diurnally in SCN. Northern blots of RNA independent of microarray samples were collected from punches of SCN at six time points and probed with rgs16, dexras1, rasl11b or per2. Blots were also probed with gapdh to control for equal loading. Size of mRNA bands was dexras1, 2200 bp; rgs16, 2300 bp; rasl11b, 2300bp; per2, 5800 bp; gapdh, 1200 bp.
