What is the difference between a primary immune response (initial exposure to an antigen) and secondary immune response (second exposure to that same antigen) of adaptive immunity?

List the primary lymphoid organs and summarize their functions in the immune system. (make sure you explain)

Antigen presentation on the MHC – the endogenous pathway.  Is the antigen presented on MHC 1 or II?   Is the antigen presented to Tc cells or TH cells?

Spleen cells are taken from a mouse immunized with the LCM virus.  2 assays are used to determine antigen-specific functional activity of the spleen cells.   Assay 1: the spleen cells (T cells) are incubated with macrophages that have been briefly exposed to LCM virus (phagocytized the virus), production of IL-2 by the T cells is considered a positive response. Assay 2: the spleen cells are incubated with LCM-infected target cells, lysis of the infected target cells is considered a positive response. The functional activity of which MHC molecules is detected in Assay 2?

Name and describe a primary immunodeficiency. 

Class I MHC are expressed by __________________________ cells, whereas Class II MHC are only expressed by ____________________ cells.

What are 3 things that can cause malignant transformations in cancer?

Essay Question (must enter in complete sentences and give at least one full paragraph). Explain what happens with both the innate and adaptive immune response when a bacteria enters into a cut in the skin and causes infection.   Include in your response what immune cells the bacteria might encounter, how it is presented to the adaptive immune system, etc.   

Below is a representation of an acid in water.  Which of the following statements is/are correct about the following image: The percent ionization of the acid would be 100% The acid could be chloric acid The acid could be acetic acid

What is the oxidation number of bromine in the compound shown below?