Cell Markers

Question 1

MHC I is present on all cells except?

Answer 1

Cell without a nucleus ie. RBCs

Question 2

CD3 is associated with what cell type(s)

Answer 2

T-cells; co-stimulation needed for signal transduction

Question 3

CD34 is associated with what cell type(s)

Answer 3

Hematopoietic Stem Cells

Question 4

CD28 is associated with what cell type(s)

Answer 4

T cells; binds B7 on APCs

Question 5

CD40L is associated with what cell type(s)

Answer 5

Helper T-cells

Question 6

CD25 is associated with what cell type(s)

Answer 6

Regulatory T-cells

Question 7

CD16 is associated with what cell type(s)

Answer 7

NK cells; binds Fc region of IgG

Question 8

A cell positive for CD19, CD 20 and CD21 is likely a…

Answer 8

B-cell

Question 9

CD21 is a receptor for what pathogen?

Answer 9

EBV

Question 10

B7 as a cell marker is classically associated with what two cell types

Answer 10

Macrophages and B-cells

Question 11

A cell positive for CD14 and CD40 is likely a…

Answer 11

Macrophage

Question 12

CD56 is associated with what cell type(s)

Answer 12

NK Cells

Question 13

LPs binds what cell surface protein on Macrophages and causes septic shock?

Answer 13

CD14 (CD40 is also a marker for Macrophages but does not bind LPS)