Infectious MononucleosisAntibodies, HeterophileAntigens, HeterophileHerpesvirus 4, HumanForssman AntigenHemagglutination TestsEpstein-Barr Virus InfectionsLatex Fixation TestsImmunoglobulin MAntibodies, ViralImmunoconglutininsFalse Positive ReactionsEpstein-Barr Virus Nuclear AntigensAgglutininsImmunoglobulin GSplenic RuptureLymphoproliferative DisordersHerpesvirus VaccinesReagent Kits, DiagnosticOropharynxImmunoassayAntigens, ViralSerologic TestsLymphocytesBurkitt LymphomaHodgkin DiseaseHerpesviridae InfectionsFluorescent Antibody TechniqueAcute DiseaseReed-Sternberg CellsLymphocytosisFatigue Syndrome, ChronicHerpesviridaePalatine TonsilHistiocytes