QuestionSBA
QuestionChoice
IgA is the antibody found in mucosal surfaces.
10000929
d
IgA
QuestionChoice
IgD is one of the antibodies expressed on naive B cells. B cells would have been primed for this pathogen already, so the antibodies would have undergone a class-switch from IgD to something else (such as IgG).
10000930
e
IgD
QuestionChoice
IgG is the main circulating immunoglobulin and is the isotype present during the secondary immune response. As the patient has already been vaccinated (primary immune response), and is now exposed to the pathogen (secondary immune response), IgG will encounter it.
10000926
a
IgG
QuestionChoice
IgE is the antibody found on mast cells and is responsible for histamine release and allergy.
10000928
c
IgE
QuestionChoice
IgM is the main antibody present during a primary immune response.
10000927
b
IgM
Concept
Chapter
2693
3852
Primary and secondary immune responses
Topic
158
Immunology
12732
After vaccination, when an individual is exposed to the pathogen that they were vaccinated against, the immunoglobulin that encounters it in the blood is already complementary to its antigens.

Which isotype of antibody is responsible for this type of immune response?
a