trypanosoma cruzi Trypanosoma cruzi 184 nonhuman 156 article 154 priority journal 150 Animal 136 Support, Non-U.S. Gov't 124 Trypanosoma 100 Molecular Sequence Data 80 chagas disease 56 Amino Acid Sequence 52 epimastigote 50 Animals 46 protozoon 40 amino acid sequence 36 controlled study 34 Protozoa 32 Chagas Disease 30 Human 30 human 30 Animalia 26 Protozoan Proteins 26 animal cell 26 Cysteine Endopeptidases 24 Ribosomal Proteins 24 trypomastigote 24 Antibodies, Protozoan 22 Base Sequence 22 Kinetics 22 Carbohydrate Sequence 20