Immune cell markers

Question 1

T cell receptor

Answer 1

T cells (bind to antigen-MHC complex)

Question 2

CD3

Answer 2

T cells (associated with TCR for signal transduction)

Question 3

CD28

Answer 3

T cells (bind to B7 on APC)

Question 4

CD4

Answer 4

Helper T cells

Question 5

CD40L

Answer 5

Th2 Helper T cells (bind to CD40 on B cells)

Question 6

IgD / M

Answer 6

B cells (bind to antigen)

Question 7

CD19

Answer 7

B cells

Question 8

CD20

Answer 8

B cells

Question 9

CD21

Answer 9

B cells (Epstein Barr receptor)

Question 10

CD40

Answer 10

B cells (bind to CD40L on Th2 cells)

Question 11

MHC II

Answer 11

Macrophages, B cells, Dendritic cells (present antigen + MHC II complex to CD4 T helper cells

Question 12

CD8

Answer 12

Cytotoxic T cells (complex with MHC I on virus cell and TCR on self)

Question 13

B7

Answer 13

Macrophages, B cells, Dendritic cells (complex with CD28 on T helper cells to provide second signal)

Question 14

CD14

Answer 14

Macrophages (can be activated by bacterial endotoxin/lipopolysacchrides)

Question 15

Fc C3b receptors

Answer 15

Macrophages

Question 16

MHC I receptor

Answer 16

NK cells

Question 17

CD16

Answer 17

NK cells (bind to Fc portion of IgG)

Question 18

CD56

Answer 18

NK cells (unique marker)

Question 19

MHC I

Answer 19

All cells, except mature RBCs

Question 20

All T cells (3)

Answer 20

TCR, CD3, CD28

Question 21

helper T cells (2)

Answer 21

CD4, CD40

Question 22

B cells (6)

Answer 22

CD19, CD20, CD21, CD40, MHC II, B7

Question 23

Macrophages (5)

Answer 23

CD14, CD40, MHC II, B7, Fc and C3b receptors

Question 24

NK cells (2)

Answer 24

CD16 (binds Fc receptor of IgG), CD 56 (unique for NK)