Immunoglobulin (antibody) classes Flashcards Preview

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Flashcards in Immunoglobulin (antibody) classes Deck (16):
1

Most abundant antibody?

IgG (80%)

2

Function of IgG

Protects against bacteria and viruses by enhancing phagocytosis, neutralising toxins and triggering complement

3

Which is the only type of antibody that can cross the placenta?

IgG

4

The second antibody involved in the primary response?

IgG

5

First/most abundant antibody in the secondary response?

IgG

6

Mainly found in sweat, tears, saliva, mucus, breast milk and GI secretions

IgA

7

Levels decrease during stress, lowering resistance to infection

IgA

8

Type III reactions involve antigens, antibodies and complement - which antibody?

IgG

9

Occurs as pentamers

IgM

10

First antibody class to be secreted by plasma cells after initial exposure to any antigen

IgM

11

In blood plasma, anti-A and anti-B antibodies of the ABO blood group, which bind to A and B antigens during incompatible blood transfusions are also?

IgM

12

First antibody involved in primary response

IgM

13

Mainly found on the surfaces of B cells as antigen receptors

IgD

14

Less than 0.1% of all antibodies

IgE

15

Located on mast cells and basophils

IgE

16

Provides protection against parasitic worms

IgE