How do some pathogens interfere with antigen presentation?

Looks at how intracellular pathogens inhibit the expression of antigens on the cell surface in order to escape the adaptive immune response. Includes examples.

What is a superantigen?

Looks at what superantigens are and why they are produced by some pathogens. Inlcudes examples.

Suppose a scientist wants to make antiserum specific for IgG.

Suppose a scientist wants to make antiserum specific for IgG. They inject a RABBIT with purified MOUSE IgG and get an antiserum thats reacts with MOUSE IgG and other mouse isotopes. Why did this happen? How can she make antiserum specific for RABBIT IgG?

Humoral and Cell-Mediated Immunity

This posting has a flow chart that outlines the immune response that occurs when a pathogen enters the body.

Immunology

1. A "constitutive" process is one that is always present or active, whereas an "inducible" process is one that requires some stimulus or event to trigger its activity. In your journal, name and briefly explain two constitutive parts or processes that protect vertebrates from elements of their external environment. 2. Injected foreign substances ("antigens") induce molecules that bind (stick to) the antigen. One can separate ("fractionate") molecules by column chromatography: Very small beads are placed in a tube. The beads have tiny pores, so smaller molecules can enter the pores but bigger ones can’t. The beads in the tube are immersed in buffer, which fills the pores and the spac... click for more