Secondary response

Definition

The secondary response is the immune system's faster and more effective reaction to a pathogen upon subsequent exposures. It is mediated by memory cells that were generated during the primary response.

5 Must Know Facts For Your Next Test

1. Secondary response occurs more rapidly than the primary response due to the presence of memory cells.
2. It typically results in higher levels of antibodies compared to the primary response.
3. Memory B and T lymphocytes play crucial roles in mediating the secondary response.
4. Secondary responses can provide long-lasting immunity against specific pathogens.
5. Vaccinations often aim to elicit a strong secondary response for long-term protection.

Review Questions

Related terms

Memory Cells: Long-lived immune cells that remember past infections and enable faster responses upon re-exposure.

Primary Response:

The initial immune reaction to a novel pathogen, characterized by slower antibody production.

Antibodies:

Proteins produced by B cells that specifically bind to and neutralize pathogens or mark them for destruction.