Similarities and Differences of Antibody Antigens in Veterinary Drug Vaccines

. Different properties: Antibodies are protective proteins produced under the stimulation of antigens. They are mainly secreted by effector B cells. They are an immunoglobulin and are mainly used to identify and neutralize foreign substances. Substances, such as bacteria, viruses, parasites, etc., mainly exist in the blood. Antigens refer to substances that can trigger the production of antibodies, so the foreign substances recognized by antibodies are antigens;

2. Different characteristics: antibodies include IgG, IgM, IgA, etc., among which IgG is produced 3 months after birth It begins to be produced around 4 years old and can reach adult levels at the age of 4. The concentration of IgM in the serum is about 1mg/ml. IgA includes two types: serotype and secretory type. Antigens are not classified. Antigens mainly depend on their molecular weight. The larger the molecular weight, the stronger the activity. Antigens also have specific characteristics and mainly combine with corresponding T cells to produce specific reactions;

3. Different functions: The attenuated antigens can be made into vaccines, which can prevent diseases. Sometimes various tests are conducted based on the specificity of the microbial antigens. After the antibodies are produced, they can effectively eliminate harmful microorganisms and parasites in the body. Insects and other substances.