Antistreptolysin O

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Definition

noun

The antibody produced by the immune system of the host against streptolysin O, an antigen produced by Group A Streptococcus bacteria.


Supplement

The antistreptolysin O or ASO is useful in determining exposure to streptococci.


Abbreviation: ASO

See also: streptolysin O, antistreptolysin O titer.