nif:isString
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Blots were washed 10 min×3 times with wash buffer (PBS containing 0.5% Tween 20) at room temperature, and then incubated for 1 h in blocking buffer including one of the following secondary affinity-purified, horseradish peroxidase-conjugated antibodies: anti-rabbit IgG (111-035-144, Jackson ImmunoResearch, West Grove, PA; 1∶20000 for Total DARPP-32, 1∶7500 for pDARPP-Thr34 and pDARPP-Thr75), anti-mouse IgG (7076, Cell Signaling, Danvers, MA; 1∶2000 for both Total CREB and pCREB).
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