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immune response

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الكلية كلية طب الاسنان     القسم  العلوم الاساسية     المرحلة 3
أستاذ المادة بهاء حمدي حكيم العميدي       25/02/2018 16:15:45
immune respones
dr. baha. hamdi.ai-amiedie ph. d.microbiology

primary immune response
during the primary response, when an individual encounters an antigen for the first time, antibody
response to that antigen is detectable in the serum after a longer time. the serum antibody concentration continues to rise for several weeks and then declines it may droping to very low levels. during this primary response, a small clone
of b cells and plasma cells specific for the antigen are.
formed the lag period is typically of 7–10 days first igm antibody followed by igg antibody

secondary immune response
the antibody response is typically more rapid in the secondary response, due to second encounter with,
the same antigen or a closely related “cross-reacting” antigen, months or years
after the primary response. the lag period is typically very short (only 3–5 days). the level of antibody is also much higher than that during the primary response the predominate antibodes is igg
these changes in secondary response are attributed to the persistence of antigen-specific “memory cells” following the first contact with the antigen. these memory cells proliferate in large
numbers to produce large clones of specific b cells and plasma cells that mediate the secondary response. in the secondary response
factors influencing antib1-age of the host 2-nutrion status of antigen 3-rot of administration 4-size & number of dose 5-mlutible antigen 6-adjuvants 7-iammunosuppressive agent. ody production


المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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