antiparasitic agent nonhuman 30 Trypanosoma cruzi 24 unclassified drug 24 article 20 Animals 16 controlled study 16 drug synthesis 16 Humans 14 Toxoplasma gondii 14 human 14 Article 12 Chagas disease 12 Toxoplasma 12 drug design 12 drug structure 12 priority journal 12 Antiparasitic Agents 10 Drug Design 10 Thiocyanates 10 biological activity 10 thiocyanic acid derivative 10 toxoplasmosis 10 4 phenoxyphenoxyethyl thiocyanate 8 Dose-Response Relationship, Drug 8 animal 8 drug activity 8 drug screening 8 in vitro study 8 tachyzoite 8