IMMUNOLOGY

Detailed explanation-1: -Immunological memory is the ability of the immune system to respond more rapidly and effectively to pathogens that have been encountered previously, and reflects the preexistence of a clonally expanded population of antigen-specific lymphocytes.

Detailed explanation-2: -Memory immune responses After the first encounter with a pathogen, our immune systems generate a small number of cells that remain for a long time, are specific for that pathogen, and circulate in the blood, spleen and lymph nodes to keep watch for another encounter.

Detailed explanation-3: -Adaptive immunity, on the other hand, is antigen-dependent and antigen-specific; it has the capacity for memory, which enables the host to mount a more rapid and efficient immune response upon subsequent exposure to the antigen.

Detailed explanation-4: -Memory B cells have B cell receptors (BCRs) on their cell membrane, identical to the one on their parent cell, that allow them to recognize antigen and mount a specific antibody response.

Detailed explanation-5: -Adaptive Immunity. Adaptive immune responses are mediated by B and T lymphocytes that are able to produce an antigen-specific reaction to a pathogen, leading to the development of memory cells that mediate a swifter and stronger response to repeated exposure to the same pathogen.

Detailed explanation-6: -Adaptive immunity This type of immunity is mediated by B and T cells following exposure to a specific antigen. It is characterized by specificity, immunological memory, and self/nonself recognition. The response involves clonal selection of lymphocytes that respond to a specific antigen.