to determine whether a low preference for human blood by triatoma dimidiata maculipennis stal , 1859 , the only known vector of chagas ' disease in yucatan , mexico , would account for the low prevalence of antibodies to trypanosoma cruzi in man in the area , the intestinal contents of 924 bugs were tested against antisera to blood antigens of chicken , opossum , dog , bat , monkey , pig , goat , rabbit , horse , human , rat , ox , cat , and armadillo .
C0003241
antibodies
C0020960
antisera