Immuno4 Flashcards
Immunoglobulin Isotypes
1
Q
Mature B lymphocytes express what Antibodies isotypes on their surfaces?
A
IgM & IgD
2
Q
What is the main antibody in 2˚ (delayed) response to antigen?
A
IgG
3
Q
What Ab prevents attachement of bacteria and viruses to mucous membranes?
A
IgA
4
Q
What Ab is produced in the 1˚ (immediate) response to an antigen?
A
IgM
5
Q
What Ab binds mast cells and basophils?
A
IgE
6
Q
What is the most abundant Isotype?
A
IgG
7
Q
Where can you find IgA Abs?
A
Secretions
Colostrum
8
Q
What Ab can be found as a pentamer?
A
IgM
9
Q
What Ab mediates immunity to worms by activating eosinophils?
A
IgE
10
Q
What Abs fix complement?
A
IgG & IgM
11
Q
What Ab does not fix complement?
A
IgA
12
Q
What Ab crosses the placent and provides infants with passive immunity?
A
IgG
13
Q
What is the function of IgG?
A
Opsonizes bacteria
Neutralizes bacterial toxins & Viruses
