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We obtained the prevalence of IgG antibodies against Trypanosoma cruzi among 1076 blood donors at the Instituto Nacional de Cardiologia " Ignacio Chavez " in Mexico City .
 GENE: IgG antibodies
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: IgG antibodies