Question

Assuming that the vaccination and primary immune response to the antigen is successful, what predominant immunoglobulin...

Assuming that the vaccination and primary immune response to the antigen is successful, what predominant immunoglobulin do you predict to be rapidly produced after a vaccinated individual’s re-exposure to the exact same antigen?

Answers:

Immunoglobulin E (IgE)

Immunoglobulin G (IgG)

Immunoglobulin A (IgA)

Immunoglobulin D (IgD)

Homework Answers

Answer #1

Answer: Immunoglobulin G (IgG)

As a response to the same antigen (in the primary immune response) an accelerated secondary or anamnestic immune response (IR) occurs even it is given days or even years later. The lag phase in secondary immunity will be very short like, 3 or 4 days because of the presence of memory cells. The main type of antibody produced in secondary immune response is IgG and a small amounts of IgM are sometimes produced. The antibody produced in secondary immunity rises to a high level and remains stable for a longer duration.

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