Rabbit anti-Human Amyloid Fibril polyclonal antibody for WB, IP, ELISA, IHC-P, IHC-Fr, Dot, ICC, IF. Serum amyloid A (SAA) proteins are a family of apolipoproteins associated with high-density lipoprotein (HDL) in plasma. Different isoforms of SAA are expressed constitutively (constitutive SAAs) at different levels or in response to inflammatory stimuli