1. What is a T-independent antigen?

2. What is a T-independent antigen?
An antigen that can stimulate a B cell by itself (without the help of a T cell)
They are usually polysaccharides or lipopolysaccharides

3. What cytokine do T helper cells secrete that stimulates B cells, T helper, and T cytotoxic cells?

4. What cytokine do T helper cells secrete that stimulates B cells, T helper, and T cytotoxic cells?
IL-2

5. What type of T cells secrete perforin?

6. What type of T cells secrete perforin?
Cytotoxic T lympohcytes (CTL)

7. What are Antigen Presenting Cells?

8. What are Antigen Presenting Cells?
Macrophages
Dendritic cells
B cells
They present antigen to T helper cells

9. What type of specific immunity is most effective against intracellular pathogens?

10. What type of specific immunity is most effective against intracellular pathogens?
Cell-Mediated Immunity

11. Give an example of Naturally Acquired Passive Immunity

12. Give an example of Naturally Acquired Passive Immunity
IgG crossing the placenta
IgA in breast milk