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health 6
lesson 2 preventing disease
Term | Definition |
---|---|
contagious | you can spread the virus to others by direct or indirect contact |
infection | the results of pathogens or germs invading the body, multiplying,& harming some of your body's cells |
immune system | a group of cells, tissues & organs that fight disease |
lymphocytes | white blood cells that attack pathogens or harmful germs |
antibodies | chemicals produced specifically to fight a particular invading substance |
immunity | resistance to infection |
vaccine | a dead or weakened pathogen introduced into your body |