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antistreptolysin OAbbreviation: ASLO
An antibody against streptolysin O that is used retrospectively to diagnose infections with group A beta-hemolytic streptococci.
See also: antistreptolysin
antistreptolysin O (an´tīstreptol´əsin),
n an antibody against streptolysin O, a hemolysin produced by group A streptococci. A high titer is supporting evidence of rheumatic fever.