Terms to remember Affinity a( Cross-reaction Agglutination Epitope/Antigenic Avidity Determinant Chemotaxis Opsonization Complement Precipitation ■Classical pathway Second antibody Alternative Specificity (properdin)pathway ValenceTerms to remember ◼ Affinity ◼ Agglutination ◼ Avidity ◼ Chemotaxis ◼ Complement ◼ Classical pathway ◼ Alternative (properdin) pathway ◼ Cross-reaction ◼ Epitope/Antigenic Determinant ◼ Opsonization ◼ Precipitation ◼ Second antibody Specificity ◼ Valence