Trypanosoma cruzi 402 nonhuman 303 article 302 priority journal 230 Animals 216 Trypanosoma 159 Chagas disease 139 controlled study 133 Chagas Disease 109 unclassified drug 103 animal 101 human 100 trypanosoma cruzi 98 Humans 95 Molecular Sequence Data 87 Animal 80 Support, Non-U.S. Gov't 76 epimastigote 70 Argentina 69 Amino Acid Sequence 61 Protozoa 58 enzyme activity 58 nucleotide sequence 55 Protozoan Proteins 54 metabolism 53 Triatoma infestans 51 Article 49 Male 46 Triatoma 44 animal cell 44