In this article we will discuss about the active and passive immunity of cell-mediated. 1. Active Immunity: On the basis of immunity acquired, active immunity may be natural or artificial. i. Natural active immunity: It results from either a clinical or an in-apparent subclinical infection by a microbe after repeated exposure to small doses of the infecting organism, which passes [...]
In this article we will discuss about the features of adaptive immune responses. 1. Specificity: It ensures that distinct microbes elicit specific responses. It exists because individual lymphocyte expresses membrane receptors that are able to distinguish subtle differences in structure between different antigens. 2. Diversity: It enables immune system to respond to a large variety of microbes. The total no. [...]
The upcoming discussion will update you about the difference between active immunity and passive immunity. Difference # Active Immunity: 1. Host participation: Produced actively by the immune system of host. 2. Activation: Induced by infection or by contact with immunogen. 3. Duration of effectivity: Immune response-durable and effective. 4. Time: Immunity effective only after lag period. 5. Memory: Immunological memory [...]