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Phosphodiesterase (PDE) isoenzymes catalyze the inactivation of intracellular mediators of signal transduction such as cAMP and cGMP and thus have pivotal roles in cellular functions. PDE inhibitors such as theophylline have been employed as anti-asthmatics since decades and numerous novel selective PDE inhibitors are currently being investigated for the(More)
PURPOSE Ambient light is both a stimulus for visual function and a regulator of photoreceptor physiology. However, it is not known if light can regulate any aspect of photoreceptor development. The purpose of this study was to investigate whether ambient light is required for the development of mouse rod photoreceptors. METHODS Newborn mouse pups(More)
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