| 释义 |
DictionarySeeimmune responseprimary immune response
primary immune response[¦prī·mə·rē i′myün ri‚späns] (immunology) The activation and response of lymphocytes specific for a newly encountered antigen; generally slower and weaker than the secondary immune response. primary immune response
im·mune re·sponse1. any response of the immune system to an antigen including antibody production and/or cell-mediated immunity; 2. the response of the immune system to an antigen (immunogen) that leads to the condition of induced sensitivity; the immune response to the initial antigenic exposure (primary immune response) is detectable, as a rule, only after a lag period of from several days to 2 weeks; the immune response to a subsequent stimulus (secondary immune response) by the same antigen is more rapid than in the case of the primary immune response. im·mune re·sponse (i-myūn' rĕ-spons') 1. Any response of the immune system to an antigen including antibody production or cell-mediated immunity. 2. The response of the immune system to an antigen (immunogen) that leads to the condition of induced sensitivity; the immune response to the initial antigenic exposure (primary immune response) is detectable, as a rule, only after a lag period of from several days to 2 weeks; the immune response to a subsequent stimulus (secondary immune response) by the same antigen is more rapid than in the case of the primary immune response. primary immune response The weak initial reaction caused by the first encounter of a ‘naive’ lymphocyte with a particular antigen. Antibodies are nor detectable for several days then rise to a (low) peak concentration and then fall again. If now there is a second challenge with the same antigen, there is a more rapid and much higher rise in the level of antibodies. This is the secondary immune response.LegalSeePrimary |