clinical immuno final1 03

Mouse MHC molecules are:

P2-microglobulin

H-2

HLA-DR, -DP, and -DQ HLA-A. -B, and -C a and p

17.

. Graft between genetically identical individuals is termed:

A. autologous d> isologous

C.    homologous

D.    allograft

E.    heterologous

18. Graft between between individuals of the same species is termed:

A.    autologous

B.    isologous allograft

D.    xenograft

E.    heterologous

19. The role of blocking antibodies (maternal antipaternał leukocyte antibodies) is:

(a) to protect and stimulate the growth of placental cells

B.    to prevent attachment

C.    to increase sperm survival

D.    to prevent blood flow to the lining of the uterus

E.    to prevent testicular infection

20. In peripherial blood:

A) Number of B cells is higher than number of T cells |' -_x B) Percentage of eosinophiles is higher than lymphocyte one |    1 QCD3 is a typical lineage marker ofT and B cells

£DyT lymphocytes, due to presence of CD2 antigen on their surfaces, make rosettes with sheep erythrocytes

21.

Within T lymphocytes:

A)    one can distinguish Thl and Th2 subpopulations

B)    one can distinguish Thl, Th2 and Treg subpopulations

C)    one can distinguish Tsl and Ts2 subpopulations

D)    a part of T lymphocytes bear CD3 antigen true is a., b. and c.

F» true is a. and c.

G)    true is a. and d.

H)    ai! are true

22. The length of peptides presented with MHC class I is:

Al usually 20-30 aminoacids ^g/usually 8-9 aminoacids

C)    usually 3-4 aminoacids

D)    about 90 aminoacids

E)    no morę then 5 aminoacids

23. CD4+T cells:

A)    recognise antigens presented together with MHC class I antigens

B)    acts as suppressor cells 0 bear CD3 antigen

D)    a great percentage of them have TCRyS

E)    have slight phagocytic abilities

24. Which of written below antigens

are NOT invoived in costimulation process?

A)	CD 80
B)	CD58
C)	CD54
D)	CD2
&	CD16