1. macrophage attraction
stimulate mast cells – so that they can release histamine
activation of compliment

2. initial response to antigen exposure is the primary response; when an antigen appears a second time, it triggers a more extensive and prolonged secondary response; memory B cells do not differentiate into plasma cells unless they are exposed a second time – when they are exposed a second time, lots of Igs are made quickly and in mass amounts

3. immunizations expose us to dead, harmless pieces of virus, stimulating a primary response; booster shots are for memory cells; the immunization works because it’s the 2^nd response that prevents the disease

4. autoimmune disorders occur with the immune system targets the body- a component may have to do with MHC proteins being mistaken for a foreign body; allergies are caused by a hypersensitivity or overreaction to a substance tolerated by most people – this substance is called an allergen – read more about hayfever, for instance

Joel’s Blog information and looks at Joel and his ideas.
McCormick & Schmicks

Business Practices in America are strange

The Democratic Dentist shares mucho wisdom
Wind Turbines are important to all of us

5. HIV binds to and infects cells with specific membrane proteins called CD4 that is specific to helper T cells and some macrophages (it kills them) – the decrease of immune abilities leads to opportunistic infections