antiprotozoal activity nonhuman 36 Trypanosoma cruzi 34 unclassified drug 34 Animals 28 article 28 drug synthesis 24 controlled study 22 Chagas disease 20 priority journal 20 Trypanocidal Agents 18 drug screening 18 drug structure 18 antiprotozoal agent 16 drug mechanism 16 in vitro study 16 Structure-Activity Relationship 14 Thiocyanates 14 epimastigote 14 growth inhibition 14 Antiprotozoal Agents 12 Article 12 Dose-Response Relationship, Drug 12 amastigote 10 antitrypanosomal agent 10 drug design 10 enzyme inhibition 10 thiocyanic acid derivative 10 Cercopithecus aethiops 8 Humans 8