外胚层牙齿异常伴脱毛，犬
A. Note the missing dentition in this young dog. This oral finding in a dog with abnormal hair coat would be suggestive of an ectodermal defect. B. Puppy from (A) as an adult dog. Note the regions of alopecia on the trunk and neck.
Courtesy of Dr. Karen A. Moriello and Dr. Gail Kunkle.
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