| streptolysin O |
an oxygen-labile and antigenic hemolysin produced by most group A streptococci and by some of groups C and G. It is inactive in the oxidized state but is readily activated by treatment with mild reducing agents, such as sulfite.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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