| A | B |
|---|
| Antigen | Foreign substance (antibody generator) that stimulates immune response |
| Antibody | Specific protein produced in humoral response to bind with antigen |
| Thymus | Gland located in the mediastinum, site of maturation and proliferation of T lymphocytes |
| Lymphatic tissue/organs | Contain many lymphocytes. Filter body fluids, remove foreign matter, immune response |
| Autoimmune disease | Disorders resulting from an overactive immune system that fails to recognize 'self'. |
| B lymphocytes | Specialized lymphocytes produced and mature in bone marrow, are precursor to plasma cells which produce antibodies or memory cells |
| T lymphocytes | Specialized lymphocytes produced by the bone marrow and matured in thymus, which is responsible for cell-mediated immunity. |
| Neutrophils | White blood cells for phagocytosis; innate defense; active in inflammation |
| Basophils | White blood cells; bind IgE, release histamines |
| Eosinophils | White blood cells; participate in allergic responses and defense against parasites |
| Monocytes | White blood cells; migrate from the blood into tissues to become macrophages |
| Macrophages | Phagocytes; process and present antigens to lymphocytes for the immune response |
| Mast cells | Release chemical mediators such as histamines into connective tissue |
| Plasma cells | Develop from B lymphocytes to produce and secrete specific antibodies |
| Cytotoxic T cells | Destroy antigens, cancer cells, virus cells |
| Memory T cells | Remember antigen and quickly stimulate immune response |
| Helper T cells | Activate B and T cells; control or limit specific immune response |
| Natural Killer cells | Destroy foreign cells, virus infected cells and cancer cells |
| Phagocytes | A generic term for any cell responsible for engulfing pathogens, waste material and foreign bodies. |
| Immunity | The condition of being resistant to infection by a specific pathogen |
| Immunodeficiency | A condition resulting in an inability of the immune system to resist infection |
| Immunosuppressants | Agents used to modify an immune response |
| Humoral immunity | A type of acquired immunity in which antibodies play a dominant role |
| Cell-mediated immunity | A type of acquired immunity in which T cells play a dominant role |
