AgglutinationAgglutination TestsTrypanosoma lewisiReceptors, N-AcetylglucosamineHemagglutination TestsRheumatoid FactorConcanavalin ALatex Fixation TestsSperm AgglutinationErythrocytesHemagglutinationLeptospirosisAgglutininsLeptospiraBrucellosisCounterimmunoelectrophoresisAntibodies, BacterialAntigens, BacterialSerotypingReagent Kits, DiagnosticEvaluation Studies as TopicLectinsSensitivity and SpecificityImmune SeraHemagglutination, ViralSerologic TestsComplement Fixation TestsBrucellaEnzyme-Linked Immunosorbent AssayFalse Positive ReactionsImmunoglobulin MWeil DiseaseAntigens, FungalCross Reactions