Immune response is categorized into primary and secondary immune responses. Primary response is the initial response of the body upon the first encounter with the antigens. It is often a slow reaction and leads to the generation of memory cells with a high specificity for the inducing antigen. While the secondary immune response of B‐ and T cells is observed following subsequent encounter with the same antigen. Unlike the primary response, secondary response reacts more rapidly leading to the activation of previously generated memory cells.
Describe the primary and secondary immune responses, indicating when each might occur and how long it takes to mount a full response, as well as WHY they are different. Also describe 2 ways you can have active immunity and 2 ways of passive immunity, and which one produces the primary and secondary responses.
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