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                            A 
            rare inherited liver disorder seen in infants and young children. 
            The disease is characterized by a buildup of bile in the liver due 
            to a deficiency or absence of normal bile ducts inside the liver and 
            a narrowing of bile ducts outside the liver. Symptoms of the disorder 
            can include jaundice, stunted growth, fatty deposits in the skin, 
            facial deformities, and abnormalities in the heart, eyes, vertebrae, 
            and kidneys. | 
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