finalB 07

30. Which pattem of antigens is characteristic for leukemie cells in B-CLL? a) CD10+/CD19+

CD5+/CD19+ c) CD34+/CD19+

d) CD3+/CD19+

31.    The autoantibodies in Lambert Eaton Myasthenic Syndrome are targeted against antigens łocałized on post-synaptic membranę

O

b)    antigens localized on pre-synaptic membranę

c)    acetylcholine

d)    adrenalinę

32.    The pepsin digest of IgGs will consist of four polypeptide chains

b)    lose all its heavy (H) chains

c)    lose all interchain disulfide bonds

d)    a. and b. are correct

5 J

33.    If you had 200 V and 5 J region genes able to codę for a light chain and 300 V, 10 D and regions able to codę for a heavy chain, you could have

a)    exactly 520 antibody specificities

b)    exactły 1000 antibody specificities

c)    exactly 15,000 antibody specificities

d)    exactly 15,000,000 antibody specificities morę than 15,000,000 antibody specificities

34.    Complement activation by an immune complex may result in

a)    precipitation

b)    release of anaphylatoxins

c)    release of macrophages-inhibiting factor

d)    opsonization only b. and d. are correct

35.    Which of the following is not produced by TH1 CD4+ T cells?

a)    IL-2 receptor

b)    IL-2

c)    Cytokines that induce macrophages activation IL-4

e) Cytokines that activates CD8+ T cells