Chapter 21 The Immune System BB Version

Same antigen figure 2111 1 of 2 immunological memory

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Unformatted text preview: ne Lag time of 3-6 days (proliferation and Lag differentiation of plasma cells) differentiation Secondary immune response: faster, Secondary longer, more effective, as immune system is primed for the antigen. There is an increased titer level in the blood for antibodies Primary and secondary humoral responses Primary and secondary humoral responses Active and passive humoral immunity immunity Active humoral immunity: Encounter Active antigen and produce antibody antigen Passive humoral immunity: Antibodies Passive from external source (serum) donor. Immune system not challenged, no memory, protection ends when antibodies naturally degrade naturally Humoral immunity Active Passive Naturally acquired Artificially acquired Naturally acquired Artificially acquired Infection; contact with pathogen Vaccine; dead or attenuated pathogens Antibodies pass from mother to fetus via placenta; or to infant in her milk Injection of immune serum (gamma globulin) Figure 21.13 Antibodies Antibodies Immunoglobulins (Igs) constitute the Immunoglobulins gamma globulins of blood proteins gamma Activated by B-cells or plasma cells, Activated bindi...
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This note was uploaded on 04/11/2013 for the course BIOL 361 taught by Professor Unkown during the Spring '12 term at University of Texas.

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