How do some pathogens modulate host cell death (apoptosis) to their own advantage?
Looks at how different pathogens induce or inhibit the death of host cells to increase their own survival chances. Includes examples.
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.
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.
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. Injec ...continues
Here is a problem: Go to this or other histology links you might find: http://www.bio.davidson.edu/courses/Immunology/Bio307.html These all have either cartoons and/or histology sections of all the important primary and secondary lymphoid organs that we talked about. Click through their sections, readings, and animation ...continues
1. A researcher purified mu heavy chains from two inbred* strains, called C3H and A/J. She immunized mice from each strain with the other’s mu chains, yielding C3H anti-A/J mu and A/J anti-C3H mu. She tested each antiserum against normal serum immunoglobulins from the sources shown: Precipitate with serum from: Antiserum C ...continues
As humoral responses progress, the average affinity of the antibodies produced rises, in a process known as "affinity maturation." This seems at odds with at least one aspect of the clonal selection hypothesis, since the notion of "clonal integrity" implies that the progeny of an activated lymphocyte retain the specificity the o ...continues
Here is the problem: http://www.bio.davidson.edu/courses/Immunology/Bio307.html#anchor24514174 Go there and click through to the "Molecular Movie" on "somatic recombination." Run the animation. The animation depicts the human lambda locus.....so there are some similarities and differences from the mouse heavy and li ...continues
