8. T cells are the source of
A.interleukin
B.interferon
C.lymphotoxin
D.all of these
9. The primary B cell receptor is
A.IgD
B.IgG
C.IgA
D.IgE
10. It is highly valued if the lymphocytes derived from the lymph node or tonsil tend to undergo fusion at
A.high frequencies
B.moderate frequencies
C.low frequencies
D.at no frequency
11. Small simple molecules are
A.poor antigens
B.rich antigens
C.moderate antigens
D.heterophilic antigens
12. The EBV-hybridoma technique
A.immortalizes the donor Bcells
B.facilitates the proliferation of antigen specific B cells
C.gives much higher hybridization frequencies
D.all of the above
13. Helper T cells assist in the functions of
A.certain B cells
B.certain T cells
C.certain B cells and other T cells
D.none of the above
14. In immuno-inflammatory diseases such as hemolytic anaemia, eczema etc.,
A.T8 cells are greatly reduced
B.T8 cells are greatly increased
C.T4 cells are greatly reduced
D.T4 cells are greatly increased
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