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passive immunity |
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passive immunity [′pas·iv i′myün·əd·ē] (immunology) Immunity acquired by injection of antibodies in another individual or in an animal. Immunity acquired by the fetus by the transfer of maternal antibodies through the placenta. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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On average, more than 10% of calves die before weaning with 80% or more of these deaths related to failure of passive immunity. The major disadvantage of passive immunity acquired from immune globulins is the relatively short period of protection (13). Some passive immunity continues through breastfeeding, particularly antibodies (IgA class) and immune cells that act locally in the respiratory and gastrointestinal tracts. |
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