Abbkine/亚科因重组人白细胞介素-1受体拮抗剂通过LAL法测定，每微克蛋白里内毒素含量<0.1 EU。

Interleukin 1 receptor antagonist （IL-1RA） is a 17.26 kDa member of IL-1 family with 153 amino acid residues. IL-1RA is expressed by peripheral blood cells, lungs, spleen, liver and is secreted from monocytes, macrophages, neutrophils, and other cells. Inhibits the activity of interleukin-1 by binding to receptor IL1R1. IL-1RA can modulate a variety of interleukin-1 related immune and inflammatory responses, particularly in the acute phase of infection and inflammation.