Pathology EMQ.

Name: Senthooran Kanthan

Theme: Immune response to infection 2

OPTION LIST

A	Cytotoxic T-lymphocyte	I	Langerhans cell
B	Dendritic cell	J	Hapten
C	Memory B cell	K	IgA
D	Plasma cell	L	IgG
E	Macrophage	M	Mast cell
F	IgE	N	IgM
G	Natural killer cell	O	IgD
H	Superantigen	P

For each scenario below, choose the most appropriate answer from the list above. Each option may be used once, more than once or not at all.

1. An antigen presenting cells that is irregular in shape, expresses high surface levels of class II MHC molecules and is important in determining the response to antigen by novel T-lymphocytes.

2. A lymphocyte that carries two distinct surface molecules, CD16 and CD56, and can kill tumour cells and virally infected cells without previous known sensitisation to the target.

3. An antigen that can bind to MHC class II proteins without first being processed by antigen presenting cells.

4. A fully differentiated B-lymphocyte which can produce and secrete antibodies towards a specific antigen.

5. An immunoglobulin that binds to mast cells through Fc receptors resulting in activation and subsequent mast cell degranulation.

ANSWERS

1. B

2. G

3. H

4. D

5. F