PATHOLOGY

Detailed explanation-1: -Immunological memory is a unique property of the immune system as it can “store” information about a stimulus and can mount an effective response when the stimulus is encountered again. This response – a secondary immune response – is quicker and stronger than the primary response.

Detailed explanation-2: -Vaccines help your immune system fight infections faster and more effectively. When you get a vaccine, it sparks your immune response, helping your body fight off and remember the germ so it can attack it if the germ ever invades again.

Detailed explanation-3: -The injection of the antigen leads to an antibody response followed by the production of memory B cells. These memory B cells are promptly reactivated upon infection with the antigen and can effectively protect the organism from disease.

Detailed explanation-4: -The primary immune response to antigen occurs on the first occasion it is encountered. This response can take up to 14 days to resolve and leads to the generation of memory cells with a high specificity for the inducing antigen.