后鼻孔闭锁，美洲驼幼崽
Photograph of a llama cria with choanal atresia. For diagnostic procedures, a tracheostomy has been performed.
Courtesy of Dr. LaRue Johnson.
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Photograph of a llama cria with choanal atresia. For diagnostic procedures, a tracheostomy has been performed.
Courtesy of Dr. LaRue Johnson.
