EditorialAcknowledgmentsThe Seventeenth Arne Tiselius Memorial Lecture Cytofluorometry to Predict Effects of Biological Response ModifiersIgG and IgA Subclasses Structure, Function Relationships within the Human IgG Subclasses Structure of the Human IgA Subclasses and Allotypes Monoclonal Antibodies Against IgG Subclasses Monoclonal Antibodies Against the IgGl Allotypes G1m(z), G1m(a) and G1M(f): Reactivity and Usefulness in HAI, Direct Elisa and Capture Elisa One Allele (G2m(n)) of the Human IgG2 Locus is more Productive than the Other in Homozygotes and Heterozygotes Methodological Pitfalls in Immunoglobulin Subclass Assays: An Investigation of Anti-Ig Subclass Monoclonal Antibody and Jacalin Reactivity Comparison of Normal Values of IgG Subclasses Class and IgG Subclass Composition of Antibodies to Group A Streptococcal Carbohydrate in Children Immunodeficiency and Haemophilus Influenza Type B (HIB) Capsular Polysaccharide Vaccine Failures Human IgG Subclass Antibodies to Dietary Antigens-Methodological and Functional Aspects Neutrophil Chemiluminescence Induced by Group A Streptococci After Opsonization with Sera and Antibodies of known IgG Subclass Composition Functional Role of Secretary IgAl and IgA2 Antibodies Against Streptococcus Mutans IgG Subclasses of Human Monclones Differ Between Myeloma and Post Bone-Marrow Graft Patients Inter-Laboratory Quality Control Program for IgG Subclass Protein Immunoassays in North America Critical Aspects on Diagnosing IgG Subclass Deficiency and its Clinical Consequences Structural Genetic Alterations in Ig Subclass Deficiencies Representation of IgG and IgA Subclasses within Monoclonal Gammapathies of Different Origin-A Minireview IgG Subclass Serum Levels in Juevenile Chronic Arthritis IgG Subclass Antibodies to Allergens During Immunotherapy A Monoclonal Anti-Human IgG-1 Subclass Antibody Produced with Secondary in vitro Immunization Anti-Peptide Antibodies as Subclass Specific Reagents: Epitope Mapping of Human IgG-2 Isotype Analysis of Specific Antibody Responses in Long-Term Survivors of Bone-Marrow Transplantation Comparative Studies of the Biological Properties of Human IgA Subclasses Interleukin Cascade for the Regulation of IgA Synthesis and Immune Responses Interaction of IgA with Complement and Phagocytes Significance of Fab Fragments of IgAl Antibodies in Bacterial Evasion of Host Defense Mechanisms Gm Markers as Indicators of the Occurrence of Transduction of Genes from one Person to Another The Natures and Sources of Natural Biliary Immunoglobulins Serum and Salivary IgA1, IgA2, IgG and IgM Antibodies to Bacterial Antigens in Aged, Edentulous, and Normal Adults Immune Mechanisms in Periodontitis: Total and Antigen specific IgG and IgA Subclass Antibody-Producing Cells at the Disease Site Quantitative Detection of Class-Specified Rheumatoid Factors and IgA Rheumatoid Factor Subclasses Alcohol and the IgA Immune System Structural and Functional Aspects of Human IgA1.