Abstract

The retina is a thin neural tissue sitting on the backside of the eye, composed of light-sensing cells, interneurons, and output ganglion neurons. The latter send electrical signals to higher visual centers in the brain. Transgenic mouse lines are becoming one of the most valuable mammalian animal models for the study of visual signal processing within the retina. Especially, the generation of Cre recombinase transgenic mouse lines provides a powerful tool for genetic manipulation. A key step for the utilization of transgenic lines is the characterization of their transgene expression patterns in the retina. Here we describe a standard protocol for characterizing the expression pattern of the Cre recombinase or fluorescent proteins in the retina with an immunohistochemical approach.

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