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| Innate and Acquired Immunity |
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| The word Immunity, arises from the latin word 'Immunis' which means 'exempt' or 'freedom'. Immunity refers to all the mechanisms used by the body for protection from external agents which include microorganisms and their products, some food items, chemicals, drugs, pollen etc. |
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| The immune system is our body guard. It is made up of molecules, cells and tissues with specific roles to defend us against foreign substances. |
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| The immunity or immune response is fundamentally of two types - Innate or natural and acquired or adaptive immunity. |
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