Regardless of the stage of the disease and the location of the infection, the histological fingerprints of syphilis include endothelial inflammation (which is caused by the endothelium of bacteria in the endothelium by the fibronectin particles on the surface of these cells with the surface of the bacteria), as well as the penetration of the plasma cells (Delayed-type hypersensitivity) and resulting in the production of nonspecific antibodies (specific troponemal antibodies) or non-specific antibodies,
And the factors that help in the infection of syphilis cohabitation unprotected sex and the use of intravenous injection in addition to health care workers.