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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.
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.
The immune cell that allows for subsequent recognition of an antigen resulting in a secondary response is called an?
The immune cell that allows for subsequent recognition of an antigen resulting in a secondary response is called a memory cell. Memory cells are small, long-lived lymphocytes.
How do B cells respond to the initial antigen challenge?
B cells respond to the initial antigen challenge by producing progeny cells. The progeny cells include both memory cells and plasma cells.
Enhance immune responses to subsequent exposures to an antigen to which the body has already been exposed are know as?
memory responses
How do cells involved in the humoral response respond to antigen presentation on the surface of a B cell?
Helper T cells recognize the receptor-antigen complex and cause plasma and memory cells to be produced to then produce antibodies.
What is antigen hypersensitivity?
Hypersensitivity describes associate abnormal or pathologic reaction that's caused by associate immunologic response to perennial exposure to associate matter. Hypersensitivity diseases embrace response diseases, during which immune responses area unit directed against self-antigens, AND diseases that result from uncontrolled or excessive responses to foreign antigens. as a result of these reactions tend to occur against antigens that can't be loose (i.e. self-antigens) and since of regeneration systems intrinsic to numerous aspects of the immunologic response, hypersensitivity diseases tend to manifest as chronic issues.
