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3-NP induces cyclin D1 expression in B6 but not in D2 striatal neurons. Representative immunohistochemistry for cyclin D1 in B6 (A) and D2 striatum (B). Positive signal is brown and negative nuclei are stained blue with Hematoxylin QS. (B) Graph representing percentage of cyclin D1 positive neurons in 3-NP-treated B6 (n = 4) and D2 (n = 4) striatum. Data are expressed as mean ± SD. ***p <0.001.
