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. Author manuscript; available in PMC: 2009 Jan 1.
Published in final edited form as: Eur J Neurosci. 2008;27:2691–2700. doi: 10.1111/j.1460-9568.2008.06224.x

Fig. 5. Diurnal changes of retinal dopamine and DOPAC in Drd4+/+ and Drd4−/− mice.

Fig. 5

Retinas from wild type and mutant mice were dissected at ZT6 during the daytime (in light) and at ZT18 at night and dopamine and DOPAC levels were measured by HPLC with electrochemical detection. n = 5 / group. No significant differences in dopamine or DOPAC levels between genotypes were found (two-way ANOVA, p>0.05).