Respuesta :
Cells left in the bloodstream and the lymphatic system to recognize and respond to any future attacks to the body by a past invader are called Memory B & T cells.
Both T and B cells are involved in immunological memory, which causes a secondary antibody response that is quicker, more affine, and resulting in the release of non-IgM isotypes of Ig.
The adaptive immune response is the antithesis of the innate immune response and is mediated by lymphatic system consists such as B & T cells.
When the immune reaction is finished, many of these cells undergo apoptosis, which returns the immune response to its prior size with one significant modification.
Some B and T cells develop into memory cells, which are essentially a collection of lymphocytes ready to fight the pathogen if they come across it again.
A modest percentage of naïve B and T cells need to be activated in order to react to the pathogen during the primary response.
The memory B and T cells, as well as antibodies, are already produced during the secondary response, and it only requires a small amount of pathogen load to reactivate the adaptive immune response.
Learn more about Memory B and T cells here https://brainly.com/question/23423029
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