Mode of Transmission of Diseases

Mode of Transmission of Diseases

Mode of Transmission of Diseases The traditional epidemiologic triad model holds that infectious diseases result from the interaction of agent, host, and environment. More specifically, transmission occurs when the agent leaves its reservoir or host through a portal of exit, is conveyed by some mode of transmission, and enters through an appropriate portal of entry to infect a susceptible host.  An infectious agent may be transmitted from …

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Gene Cloning- Requirements, Principle, Steps, Applications

Gene Cloning- Requirements, Principle, Steps, Applications

Gene Cloning- Requirements, Principle, Steps, Applications The production of exact copies of a particular gene or DNA sequence using genetic engineering techniques is called gene cloning. The term “gene cloning,” “DNA cloning,” “molecular cloning,” and “recombinant DNA technology” all refer to same technique. When DNA is extracted from an organism, all its genes are obtained. In gene (DNA) cloning a particular gene …

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