Essentials of Anatomy and Physiology

The Lymphatic System and Immunity 331

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Produces cytokines to

attract macrophages

Chemically destroys

foreign cells

Memory T cell

Helper T cell Cytotoxic T cell

Macrophage

Foreign antigen

Self antigens

Receptor sites

Self antigens

Receptor sites

Macrophage

Helper T cells Memory B cell

B cell Plasma cell

Antibodies

Opsonization Antigen-antibody complex Complement fixation

lysis of

cellular antigen

Macrophage

A Cell-mediated

B Antibody-mediated

Figure 14–7. Adaptive immunity. (A) Cell-mediated immunity. (B) Antibody-mediated

immunity. See text for description.

QUESTION:Adaptive immunity has memory; which cells provide this? What kind of mem-

ory is it?