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 anemia, 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

15. Which of the following is incorrect?

A. MAbs can be used to diagnose or treat diseases
B. MAbs can be used in tumor scanning
C. MAbs can be used in cancer diagnosis
D. MAbs can not be used in such non-infectious diseases as those of endocrine system