| A | B |
| antibodies | protein produced to respond to, & interact with a specific antigen |
| antigen | substance that induces the formation of antibodies |
| immunity | the state of being protected against a specific disease |
| active immunity | immunity that develops when the body's immune system is stimulated by a disease organism or a vaccination |
| passive immunity | temporary immunity produced as a result of the injection of preformed antibodies |
| hormones | chemical product of an endocrine gland which has a regulatory effect on the cell's metabolism |
| allergy | reaction of the bodys immune system to the chemical composition of various substances |
| HIV | It is the virus that causes AIDS, it infects helper T - cells and ramains inside these cells for a while with no symptoms showing. When active it destroys helper T - cells. |
| A.I.D.S. | It is an immune system disease, it is caused by HIV. It weakens the immune system. |
| Viruses | they are extremely small particles of DNA and RNA surrounded by protien coats, capable of reproducing themselves inside living cells known as host cells. |
| Bacteria | They are unicellular organisms with prokaryotic cells, they belong to the kingdom Monrea. |
| Fungi | It includes organisms unable to manufacture their own organic foods. Example is a mushroom. It lives grows and reproduces on food which it is found. |
| Parasites | They are a type of hetertroph they obtain nutrients from living organisms in or on which they live. It is a type of bacteria, they can cause disease. |
| Immune System | It carries out a major pert of the protective function of blood. It is the infection fightinf system of the body. |
| Pathogens | They are viruses,bacteria that cause disease. They must enetr the body,overcome the body's immune deffences and multiply to cause a disease. |
| Vaccinations | They are inoculatuions of dead or weakend disease organisms that stimulates the body's immune system to produce active immunity. It is how antibody production is stimulated. |
| Microbe | It is a microorganism, it is a disease causing bacterium. It is a bacteria. |
| Infectous Agents | They are spread by infection, they tend to spreqad quickly and to many people. |
| Cancerous Cells | They are once normal cells for some reason multiply without control. Cancer cells probably form in the blood continuously but the immune system recognizes abnormal protiens on the surface of cancer cells as antigens. T cells search the body and destroy cancer cells. |
| Organ Malfunction | It is when an organ does not work properly, thus effecting life processes. The body might reject an organ. |