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Definition

noun

A type of hemolysin produced by or derived from some strains of streptococci.

Supplement

A streptolysin may be streptolysin O, which is oxygen-labile or streptolysin S, which is oxygen-stable.

Word origin: strepto- from Streptococcus + (hemo)lysin.

See also: Streptococcus, hemolysin.

Related terms:

• streptococcus O
• streptococcus S