The crp-reactive protein, or C-reactive protein, mainly has the effect of enhancing phagocytosis of leukocytes, reducing inflammation, and eliminating cellular DNA from necrotic tissues. 1. Enhancement of leukocyte phagocytosis: C-reactive protein is part of the non-specific immunity of the human organism, due to the binding of C-polysaccharides, which can bind phosphorylcholine on the cell membrane in the presence of Ca²⁺, and also is the classic pathway to activate the complement, which has the effect of enhancing the phagocytosis of leukocytes and plays a role in the regulation of the mononuclear macrophagic system or the lymphocytes, and also has a role in promoting the production of macrophage tissue factor. 2. Reduce inflammation: C-reactive protein can bind to platelet-activating factor and reduce the inflammatory response. 3. Eliminate cellular DNA in necrotic tissue: C-reactive protein can bind to chromosomes and play a role in eliminating cellular DNA in necrotic tissue.