This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: IMMUNOLOGICAL MEMORY The level of antibodies in the serum against a particular antigen can be measured---this is called antibody titer. If a person has never encountered an antigen, there are no antibodies, and for several days after the first encounter this is still the case. Then antibodies begin to appear and the level slowly rises. The first antibodies are IgMs, then IgGs begin to appear. This is called the primary response to the antigen. If the same antigen is encountered again, the response will be quite different. This is called the secondary response, the memory response, or the anamnestic response. It is due to memory B cells specific to the antigen and causes a sharp, rapid rise in the level of IgG antibodies, which often prevents the development of the disease at all. CHEMICAL MESSENGERS: THE CYTOKINES In the middle of the last century (1900s) immunologists began to realize that fluids containing...
View Full Document
This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.
- Fall '09