Characteristics of the Specific Immune Response

• It recognizes and targets “specific” pathogens or foreign substances.

• It has a “memory,” the capacity to store information from past exposures to respond more quickly to future invasions of the same pathogen.

• It protects the entire body, the immunity is NOT linked to the site of infection.

Objective: Learn the Antibody Response of the Immunity SystemKey words: antibodies, antigen, pathogen, antibody, B Cells, Memory T Cells

• A protein on a foreign object that stimulates the immune system to produce antibodies

• A virus, bacteria, toxin, ... That trigger the immune response

Antigen

Objective: Learn the Antibody Response of the Immunity SystemKey words: antibodies, antigen, pathogen, antibody, B Cells, Memory T Cells

Figure 9.7

Antibodies: proteins that recognize and bind to antigens.

Antibodies

Objective: Learn the Antibody Response of the Immunity SystemKey words: antibodies, antigen, pathogen, antibody, B Cells, Memory T Cells

Antibodies bind specific antigens

• Antibodies bind to antigens

• Pathogens clump together or agglutinate

• White Blood Cells (Macrophage) phagocite the antibody-antigen complex

Antibody-Antigen Complex

Objective: Learn the Antibody Response of the Immunity SystemKey words: antibodies, antigen, pathogen, antibody, B Cells, Memory T Cells

B Lymphocyte or B cells

Objective: Learn the Antibody Response of the Immunity SystemKey words: antibodies, antigen, pathogen, antibody, B Cells, Memory T Cells

Antibody mediated immunity

Objective: Learn the Antibody Response of the Immunity SystemKey words: antibodies, antigen, pathogen, antibody, B Cells, Memory T Cells

Antibody mediated immunity

Objective: Learn the Antibody Response of the Immunity SystemKey words: antibodies, antigen, pathogen, antibody, B Cells, Memory Cells

• B Lymphocytes mature in bone marrow.• B Lymphocytes or B cells are responsible for the antibody-

mediated immunity. They produce antibodies when exposed to specific antigens.

• T Lymphocytes mature in the thymus gland.• T Cells are responsible for cell-mediated immunity.

Antibody mediated immunity

Objective: Learn the Antibody Response of the Immunity SystemKey words: antibodies, antigen, pathogen, antibody, B Cells, Memory T Cells