| Term | Definition |
|---|---|
| Antibiotic | a substance that kills bacteria or prevents the growth of bacteria |
| Antibody | a chemical made by the immune system that makes it easier for white blood cells to destroy pathogens |
| Bacteria | microscopic, single-celled organisms |
| Contagious | very easy to spread; used to describe disease |
| Disease | anything that disrupts your body from working properly |
| Histamine | a chemical that is made by cells in response to injury |
| Immune | able to make the antibodies to a pathogen before it can make you unwell |
| Immune System | the system in your body that fights infections |
| Infectious Disease | disease that can be spread |
| Lymphocyte | a white blood cell that makes antibodies |
| Macrophage | a white blood cell that consumes pathogens |
| Neutrophil | a type of white blood cell that consumes pathogens |
| Pathogen | an organism that can cause disease |
| Pathogenic Bacteria | bacteria that can cause disease |
| Penicillin | an early antibiotic |
| Quarantine | isolation to prevent the spread of a disease |
| Symptom | indicator of a particular disease |
| Vaccine | a chemical that causes your body to react as if it had encountered a pathogen |
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