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Electroretinograms of two C3H congenic strains wild-type for Pde6b (used as the sighted control strains) and four C3H rd1 substrains (the representative strain is C3H/HeJ). A: Dark-adapted conditions. B: Light-adapted conditions. Dark-adapted responses were recorded after overnight dark adaptation, while light-adapted responses were recorded with a background light of 1.46 log cd/m2 following 10 min exposure to the same intensity.
