finalB 08

36.    Which of the following is not expressed on the surface of the maturę B lymphocytes ?

a)    CD40

(1^) MHC class II molecules surrogates light chains

d)    CD19

e)    IgM and IgD

37.    The forces involved in antigen-antibody interactions (a)) depend on the presence of complement

b)    involved covalent interactions

c)    operate between antigens in Solutions and antibody within the cytoplasm of plasma cells may involve electrostatic interactions

\e)j may invołve disułfide bonds 3s) The first immunogłobulin synthetysed by fetus is \§) IgA

b)    IgE •

c)    IgG IgM

e) nonę- the fetus~ does rrof synthesize imńiuhoglobulins 39. The antibody isotype that acts in concert with lysozyme against gram-negative organism is

t	IgA
b)	IgG
c)	IgD
d)	IgM
e)	IgE

O

40. Which of the following generally DOES NOT apply to BOTH primary and secondary lymphoid

organs ?

a)    celiułar proliferation

b)    differentiation of lymphocytes

c)    cellular interaction antigen-dependent response

e) nonę of the above