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Cone Degeneration

Body function:
Eyes
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Cone degeneration is an inherited degenerative eye condition that causes day blindness. In German shorthaired pointers, cone degeneration is caused by a mutation of the CNGB3 gene. Cones in the dog’s retina typically degenerate between 2 and 3 months of age, progressing until the dog experiences total day blindness.
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