Radioimmunoprecipitation AssayRadioimmunosorbent TestHTLV-II AntibodiesHTLV-I AntibodiesAntibodies, ViralRadioimmunoassayColombiaCross ReactionsEpitopesAntigens, ViralEnzyme-Linked Immunosorbent AssayNeutralization TestsSensitivity and SpecificityPrecipitin TestsAntibodies, MonoclonalChloroformHepatitis B virusHepatitis BPolymerase Chain ReactionHepatitis B Surface AntigensReceptors, Neuropeptide YTrypanosomiasis, AfricanTrypanosoma cruziChagas DiseaseTrypanosomiasisTrypanocidal AgentsTrypanosomiasis, BovineTrypanosoma brucei gambiense