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How long does it typically take to produce sufficient immunologic memory following an initial exposure to an antigen?
Production of sufficient immunologic memory typically takes a few weeks following the initial antigen exposure.
What are characteristics of adaptations?
1-Response is antigen-dependent 2-There is a lag time between exposure and maximal response 3-Antigen-specific 4-Exposure results in immunologic memory
What is immunologic memory produced by vaccination?
Immunological memory is the ability of immune system to respond more rapidly and more effectively to pathogens that have been encountered previously and reflects the preexistence of a clonally expanded population of antigen specific lymphocytes.
What are three characteristics of the adaptive immune response?
1) it is specific, 2) systemic, 3) and it has memory
Antigens cause immature B cells to?
When a B cell detects an antigen, it will engulf it and then display it on its cell surface with an MHC molcule. This antigen/MHC combination is then detected by a T cell - which will send signalling molcules to B cells to multiply and mature into plasma cells (which create antibodies against the antigen) and memory B cells (which 'remember' the antigen for next time).They become plasma cells
What is a serology lab?
Serology, the study of serum, is the science that studies antigen-antibody or immunologic reaction of the body,using a serum specimen. A primary role of the serological lab is to diagnose infectious diseases by observing the presence of an immune antibody in the pt.which resulted from inf. or entry of the pathogen (antigen) into the body.
The immune cell that allows for subsequent recognition of an antigen resulting in a secondary response is called an?
Memory cell. Memory cells are a type of immune cell that remember specific antigens upon initial exposure, allowing for a faster and more effective response upon subsequent exposure to the same antigen.
After the first exposure to an antigen what carries the record of the exposure in the body?
Memory B cells and memory T cells carry the record of the first exposure to an antigen in the body. These cells are generated during the initial immune response and remain in the body to provide a faster and stronger immune response upon re-exposure to the same antigen.
Would lack of memory B cells for a particular antigen impact the primary or secondary humoral response?
Lack of memory B cells for a specific antigen would primarily impact the secondary humoral response. Memory B cells play a critical role in mounting a more rapid and robust immune response upon re-exposure to the antigen during a secondary response.
Anitgen-sensitized cells that remain in circulation for long periods of time?
Memory B cells and memory T cells are antigen-sensitized cells that can remain in circulation for long periods of time. These cells are part of the adaptive immune response and provide immunological memory, allowing for a faster and more effective response upon re-exposure to the same antigen.
How b cell responds to the initial antigen challenge?
Upon initial antigen challenge, B cells with specific surface receptors that match the antigen become activated. These activated B cells differentiate into plasma cells that produce antibodies targeting the antigen. Additionally, some B cells can also become memory B cells to mount a faster and more robust immune response upon subsequent exposures.
What are the 3 types of cells that helper t cells produce upon being alarmed of an antigen?
Helper T cells can produce three types of cells when alerted to an antigen: effector T cells, memory T cells, and regulatory T cells. Effector T cells help eliminate the antigen, memory T cells remember the antigen for future responses, and regulatory T cells help regulate the immune response to prevent excessive inflammation.
