RATCLIFFE, N. A. ; NIGAN, Y. ; MELLO, C. B. ; GARCIA, E. S. ; Azambuja P . Trypanossoma cruzi and erythrocyte agglutinins: a comparative study of occurance and properties in the gut and hemolymph of Rhodnius prolixus.. Experimental Parasitology, v. 83, p. 83-93, 1996.