ParasitesNematode InfectionsDrug ResistanceTrichostrongylusAntimalarialsHaemonchusHost-Parasite InteractionsParasitic Diseases, AnimalParasitic Sensitivity TestsPlasmodium falciparumChloroquineHaemosporidaParasite Egg CountParasitic DiseasesMalaria, FalciparumPyrimethamineSheep DiseasesProtozoan ProteinsMefloquineArtemisininsSulfadoxineMalariaAntiprotozoal AgentsProguanilDrug Resistance, MicrobialDrug Resistance, BacterialQuinineDrug CombinationsImmunity, InnateDrug Resistance, NeoplasmTetrahydrofolate DehydrogenaseParasite LoadSelection, GeneticDrug Resistance, MultipleAllelesDisease ResistanceGenotypeSheepVascular ResistanceGenetic VariationDrug Resistance, ViralDrug Resistance, Multiple, BacterialAnti-Bacterial AgentsMicrobial Sensitivity TestsMolecular Sequence DataToxoplasmaDNA, ProtozoanApicomplexaMutationLife Cycle StagesTetracycline ResistanceIntestinal Diseases, ParasiticAntigens, ProtozoanTrypanosoma cruziPlasmodium bergheiPlant DiseasesParasitemiaPenicillin ResistanceErythrocytesGenes, ProtozoanLeishmaniaTrematodaDrug Resistance, FungalAmino Acid SequenceAirway ResistanceCestodaProtozoan InfectionsPolymerase Chain ReactionProtozoan Infections, AnimalSequence Analysis, DNALeishmania majorBase SequenceBacterial ProteinsGenome, Protozoanbeta-Lactam ResistanceHelminthsHelminthiasis, AnimalResistance TrainingAntibodies, ProtozoanLeishmania donovaniParasitologySchistosoma mansoniEscherichia coliPhenotypeR FactorsAnophelesPhylogenyLeishmaniasis, CutaneousDNA, BacterialP-GlycoproteinSporozoitesPlasmidsMice, Inbred BALB CSpecies SpecificityAmpicillin ResistancePlasmodium vivaxChloramphenicol ResistanceTetracyclinePlasmodium yoeliiLeishmaniasis