(1) Anti-defensin β1 antibiotic accurately binds to an antigen: antibiotic itself attenuated or not anon annihilate the ambition beef with specific antigen, usually crave plan accompaniment or phagocytic beef to abolish the aftereffect of pathogenic micro-organisms or to could cause dissection damage. However, specific antibodies with bacilli or toxins can be accumulated and a absolute role in the virus. (2) activation of complement: IgM, IgG1, IgG2 and IgG3 by the classical alleyway of accompaniment activation, the aggregate of IgA, IgE and IgG4 can to complete the activation via the another pathway. (3) bounden cells: altered classes of immunoglobulins, may be a aggregate of altered types of beef in the allowed acknowledgment are involved. (4) through the placenta and mucous: immunoglobulin G (IgG) through the placenta into the fetal bloodstream, so that the fetus by itself formed acquiescent immunization. Immunoglobulin A (IgA) through the digestive amplitude and the film of the respiratory tract, the capital agency of the bounded anti-infection in mucosal immunity. (5) Antigen: antibiotic atom is a protein, but aswell activate the physique to aftermath an allowed acknowledgment performance. Altered immunoglobulin molecules, anniversary accepting a altered antigen. (6) antibiotic attrition to concrete and actinic factors and immunoglobulin about the same: no heat, the ~ 70 ℃ is destroyed 60th To accomplish assorted enzymes and agglomeration of protein denaturation of the substance, can the adverse furnishings of the antibody. Antibodies may aloof salts precipitated. In the assembly of ammonium sulfate or sodium sulfate precipitation generally accessible from the allowed serum globulin contains antibodies and again antiseptic by dialysis method.