surface markers

Question 1

involved on T cell activation

Answer 1

CD2

Question 2

found on all T cells; associated with T cell antigen receptor

Answer 2

CD3

Question 3

identifies T helper cells; also found on most T regulatory cells

Answer 3

CD4

Question 4

receptor for HIV; co receptor for MHC class II

Answer 4

CD4

Question 5

positive or negative modulation of T and B cell receptor signaling

Answer 5

CD5

Question 6

identifies cytotoxic T cells

Answer 6

CD8

Question 7

co receptor for MCH class I

Answer 7

CD8

Question 8

protease; marker for pre-B CALLA

Answer 8

CD10

Question 9

low affinity Fc receptor for antibody; mediates phagocytosis

Answer 9

CD16

Question 10

part of B cell co receptor; regulates B cell development & activation

Answer 10

CD19

Question 11

receptor for complement component C3d; part of B cell co receptor with CD19

Answer 11

CD21

Question 12

regulation of IgE synthesis; triggers release of GM-CSF from monocytes

Answer 12

CD23

Question 13

receptor for IL2

Answer 13

CD25

Question 14

adhesion molecule mediating homing to peripheral lymphoid organs

Answer 14

CD44

Question 15

essential in T & B cell antigen stimulated activation

Answer 15

CD45R

Question 16

cell adhesion & signaling

Answer 16

CD45

Question 17

subunit of NKG2-A complex involved in inhibition of NK cell cytotoxicity

Answer 17

CD94

Question 18

normal ratio of CD4 & CD8 cells

Answer 18

2:1