?:definition
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Serology reagents intended to detect antibodies to deoxyribonuclease streptolysin O, an antigenic hemolysin produced mostly by group A streptococci but also by some group C and G streptococci. These antibodies develop in response to or as the result of a preceding streptococcal infection and are associated with some autoimmune diseases such as acute rheumatic fever, Tourette\'s syndrome, and post-streptococcal glomerulonephritis.
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