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disease:BOL is from a patient with Waldenstrom macroglobulinemia.,disease:JL is from a patient with ankylosing spondylitis.,disease:Reactive, secondary amyloidosis is characterized by the extracellular accumulation in various tissues of the SAA protein. These deposits are highly insoluble and resistant to proteolysis; they disrupt tissue structure and compromise function.,disease:TH is from a patient with juvenile rheumatoid arthritis.,function:Major acute phase reactant. Apolipoprotein of the HDL complex.,induction:Upon cytokine stimulation.,mass spectrometry: PubMed:12606051,mass spectrometry: PubMed:12973732,mass spectrometry:With variant Ala-70 PubMed:1463770,mass spectrometry:With variants Ala-70, Val-75, Asn-78 and 86-Leu-Thr-87 PubMed:1463770,miscellaneous:Elevated serum SSA protein levels may be associated with lung cancer.,polymorphism:Both SAA1 and SAA2 have a number of alleles