What type of response occurs when the body is exposed to an antigen multiple times?Group of answer choicesPrimary ResponseSecondary Response

Understanding the Immune Response

1. Definitions of Responses:

   • Primary Response: This is the initial response of the immune system when it encounters an antigen for the first time. It typically involves B cells producing antibodies and T cells recognizing and responding to the antigen.
   • Secondary Response: This occurs upon subsequent exposure to the same antigen. The body is able to respond more rapidly and effectively due to the memory cells created during the primary response.

2. Mechanism of Responses:

   • In the Primary Response: The immune system takes time to recognize the antigen and produce specific antibodies, which can take several days to weeks.
   • In the Secondary Response: The presence of memory cells allows for quicker recognition and a more robust antibody production, often resulting in a stronger and faster response that can occur within hours to days.

Conclusion

When the body is exposed to an antigen multiple times, it elicits a Secondary Response. This is characterized by a faster and more efficient immune reaction due to the previously established memory cells.