No abstract available
MeSH terms
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Adult
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Aged
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Antigen-Antibody Complex / analysis
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Arthritis, Rheumatoid / complications
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Arthritis, Rheumatoid / immunology*
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Bacterial Infections / etiology
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Complement Fixation Tests
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Complement System Proteins / analysis*
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Female
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Humans
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Immunodiffusion
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Immunoglobulin G / analysis
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Immunoglobulin M / analysis
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Immunologic Deficiency Syndromes / complications*
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Male
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Middle Aged
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Precipitin Tests
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Rheumatoid Factor / analysis
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Ultracentrifugation
Substances
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Antigen-Antibody Complex
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Immunoglobulin G
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Immunoglobulin M
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Complement System Proteins
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Rheumatoid Factor