The adaptive immune response is a

Position 1: Critically, a subset of these activated cells persists as long-lived memory cells, enabling a far faster and stronger response if the same pathogen is encountered again.

Position 2: Upon encountering a foreign antigen, antigen-presenting cells such as dendritic cells process and display fragments of the pathogen to naïve T lymphocytes.

Position 3: B lymphocytes, stimulated by helper T cells, subsequently produce large quantities of antigen-specific antibodies that neutralise the pathogen or mark it for destruction.

Position 4: The adaptive immune response is a highly specialised defence mechanism that allows the body to mount targeted attacks against specific pathogens.

Position 5: This interaction activates the T cells, which then proliferate and differentiate into effector cells capable of directly killing infected cells or coordinating the antibody response.