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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Exp Eye Res. 2008 Aug 20;87(5):471–477. doi: 10.1016/j.exer.2008.08.004

Fig. 1. Day/night variation in the retinal Drd4 expression in the Sprague-Dawley rat.

Fig. 1

X-ray images of sagittal sections, hybridized for the Drd4-receptor, of rat eyeballs from a control rat (A and C) and from a rat (B and D), in which the superior cervical ganglia have been removed bilaterally (SCGx) ten days before sacrifice. Note the high nighttime expression, which is unaffected by ganglionectomy. E: densitometric quantification of the signals showing mean ±SEM of 5 animals. dpm = disintegrations per minute. * = p<0.05, ** = p<0.01. Scale bar = 2 mm.