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Medical Definition of S antigen
1. 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 antigen. (05 Mar 2000)
Lexicographical Neighbors of S Antigen
SWMs SWOT SWT SWbS SWbW SXSW SXT SY SYHA SYLK | SYNT SYP SYSOP S & L S & M S antigen S factor S gene complex S layer S meter | S meters S phase S potential S protein S region S ring S romanum S sign of Golden S wave S wrench |