soluble antigen


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sol·u·ble an·ti·gen

viral antigen that remains in solution after the particles of virus have been removed by means of centrifugation; in the case of the influenza viruses, it is the internal helical structure, free of the external envelope.
Synonym(s): S antigen (1)

soluble antigen

An antigen dissolved in a liquid. A soluble antigen is recognized by B lymphocytes but cannot be detected by T lymphocytes until it has been processed by an antigen-presenting cell. See: T cell.
See also: antigen
References in periodicals archive ?
3% of CSF specimens testing positive for soluble antigens.
Counterimmunoelectrophoresis and immunodiffusion for the detection of antibodies to soluble antigens.
Immunization with soluble antigens alone or in combination with conventional vaccine formulations is generally insufficient to induce specific cytotoxic T-lymphocyte responses.