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Maternal disomy was confirmed by polymerase chain reaction analysis of microsatellite repeats at the gamma - aminobutyric acid receptor beta3 subunit ( GABRB3 ) locus .
 Disease: Maternal disomy
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: Maternal disomy