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Some more context would be helpful. This question sounds like it may be asking about antigen exposure in the field of allergic disease, but it's hard to be sure. Hypersensitivity reactions (the immune system basis for Allergies) are based on the principle that allergy follows initial sensitization to an antigen.
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Initial exposure to an antigen?
The answer is sentizitation
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.
This cell speeds up the recognition of an antigen when it is introduced again after an initial exposure and reaction?
Phagocyte
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 y- shaped protein that is produced by plasma cells upon exposure to a specific antigen and can bind to that antigen is called a?
antibody
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.
Is a type of immunity that develops from exposure to an antigen. This exposure results in production of antibodies.?
Active Immunity
What leads to long-term immunity in mammals?
exposure to antigen
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
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.
Can a person can go into anaphylactic shock on their first exposure to an antigen?
Yes, it is possible for a person to go into anaphylactic shock on their first exposure to an antigen if they have a severe and immediate allergic reaction. This is known as anaphylaxis and can be life-threatening.
Which is NOT a cardinal sign of inflammation?
During the first exposure to an antigen antibodies are produced
