1) Describe the adaptive immune responses to infection by a pathogen, including humoral and cellular immunity and the different types of cells and molecules involved in each of these

1) Describe the adaptive immune responses to infection by a pathogen, including humoral and cellular immunity and the different types of cells and molecules involved in each of these.

2.  a. What does MHC stand for?

b. What is the function of MHC?

c. What type of cells have MHC class I on their surface?

d. What type of immune system T-cells primarily interact with MHC class I (along with CD 8)?

e. What types of cells have MHC class II on their surface?

f.  What type of immune system T-cells primarily interact with MHC class II (along with CD4)?

2. Describe the three ways the complement system can be activated.

3.  Describe the purpose and mode(s) of action of the complement system.

4. What is the purpose and mode of action of interferon?

6. Differentiate between the following and give an example of how each is acquired.

a. active natural immunity

b. active artificial immunity

c. passive natural immunity

d. passive artificial immunity