• 2.) AA Protein: It is derived from a serum precursor denominated: SAA (serum amyloid-associated), a protein synthesized in the liver and that circulates united to HDL lipoproteins; it is an acute phase reactant present in elevated levels in the serum of patients with chronic inflammatory conditions such as tuberculosis, syphilis, osteomyelitis, rheumatoid arthritis, chronic inflammatory bowel dise