Examlex
Indicate whether the function is one-to-one.
-{(-5, -9) , (-4, -9) , (-3, 7) , (-2, 4) }
Secondary Response
The immune system's more rapid and intense response to a pathogen when it is encountered for the second time, due to the presence of memory cells.
Initial Antigen
The first exposure of the immune system to a foreign molecule or pathogen, triggering an immune response.
Primary Response
The initial response of the immune system to a new antigen, typically involving the activation and proliferation of specific lymphocytes.
Secondary Response
The immune system's enhanced reaction upon a second or subsequent encounter with an antigen, typically faster and more vigorous than the primary response.
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