Abstract

BIOLOGICAL SHIELD TO AVOID DEFILEMENTS AND DISEASES: IMMUNITY: AN OVERVIEW

*Radha Sharma, Suman Jain

Abstract

Immunity can be defined as the ability to withstand against diseases. In other words immunity is the state of having sufficient biological shield to avoid defilements and diseases or other unwanted biological invasion. The most probable causes of diseases are microbes or foreign substances. Immunity mainly distributed into innate and acquired immunity. Immunity involves both specific and non-specific components. Naturally acquired active immunity occurs when a person is exposed to a live pathogen, and develops a primary immune response, which leads to immunologic memory. Artificially acquired active immunity can be induced by a vaccine, a substance that contains antigen. There are somany factors affect your immune system. Our immune system does a magnificent job of preventing you against disease-causing microorganisms. But sometimes it unsuccessful: A germ successfully makes you sick. It possible to disturb in this process and make our immune system stronger by making improvement in your diet; by taking certain vitamins or herbal preparations; and by making other lifestyle changes.

Keywords: Immunity, active immunity, passive immunity, diet, maturity.