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HPRT - deficient mice generated using mouse embryonic stem cells exhibit none of the behavioral symptoms associated with the Lesch - Nyhan syndrome .
 Disease: HPRT - deficient; Disease: Lesch - Nyhan syndrome
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: HPRT - deficient; Disease: Lesch - Nyhan syndrome