| seronegative | Lacking an antibody of a specific type in serum; used to mean absence of prior infection with a specific agent (e.g., rubella virus), disappearance of antibodies after treatment of a disease (e.g., syphilis), or absence of antibody usually found in a given syndrome (e.g., rheumatoid arthritis without rheumatoid factor). (05 Mar 2000) |
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