8. T cells are the source of
A.interleukin
B.interferon
C.lymphotoxin
D.all of these

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9. The primary B cell receptor is
A.IgD
B.IgG
C.IgA
D.IgE

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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

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11. Small simple molecules are
A.poor antigens
B.rich antigens
C.moderate antigens
D.heterophilic antigens

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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

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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

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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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