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

What is the difference between B-2 cells and B-1 cells?  Which group is TI and which is TD?

Identify this molecule (whole molecule):

What type of B cell leaves the bone marrow?

What is the purpose of a complete B-cell receptor, why is it not enough to just have membrane bound antibody on a B cell?

Are the infected strain A cells killed or not killed?  Explain.

The mechanism that permits immunoglobulins to be synthesized in either a membrane-bound or secreted form is

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. Activity of which cell population is detected in Assay 2?

Identify which of the following cells are myeloid and which are lymphod:

In antibody gene rearrangement, what is allelic exclusion?