How does a cytotoxic T cell destroy another cell displaying antigens bound to class I MHC proteins?

Which of the following cell types are antigen-presenting cells (APCs). 

1. Macrophages  2. Neutrophils 3. B cells 4. T cells 5.Plasma Cells

Mark the following statements as true or false. If a statement is false, correct is to make a true statement.

b. The secondary immune response is mediated by plasma cells.

Mr. White developed neutropenia as a consequence of cancer chemotherapy, which destroyed much of his bone marrow. What other components of the immune system would be harmed by bone marrow destruction? Would you expect his hematocrit to be elevated or decreased? What effects would you expect to see from this change in hematocrit? (Connects to Chapter 19)