1. Expand cell line HL-60.

Human myeloid leukemia cell line

2. How B cell hybridomass are formed?

They are formed by the fusion of antigen primed B cells with cancerous plasma cells.

7. What does the following sentence means? T cell is said to be class I restricted.

It means that they can recognize the antigen, which is, associated with class I MHC molecules.

8. Describe major events in the inflammatory response.

The following are the major events in the inflammatory response:
The diameter of the capillaries increases in the affected region and their permeability, which facilitates influx of white blood cells.

9. Name some features of a secondary immune response that distinguish it from primary immune response

Secondary immune response requires an amplified population of memory cells. Response is more rapid compared to primary immune response.