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What is culture medium, , ¢ The food material or substances required for, growing microorganisms in vitro (outside the, body) is called culture medium.

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Uses of culture medium, , It is important to grow microorganisms outside the body, for the following purposes:, , 1. to identify the cause of infection from the clinical sample, so that proper, treatment can be given., , 2. to study the characteristics or properties of microorganisms., , 3. to prepare biological products like vaccines, toxoides, antigens...etc.

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Composition of culture media, , Water, , Energy source, , Carbon source, Nitrogen source, Mineral salts, , Special growth factors

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Types of culture media, , Classification based on physical state, , a) solid medium, b) semi solid medium, c) liquid medium

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Classification based on the ingredients, , a) simple medium, , b) complex medium, , c) synthetic or defined medium, d) Special media