Prevention of chicken AIDS by magic sheep
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Last Update: 2001-10-16
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Source: Internet
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Author: User
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Introduction: a sheep has become the most eye-catching star in the exhibition hall of the third high tech fair It is the first genetically modified sheep in China that efficiently expresses the chicken bursal virus vaccine The milk contains high concentration and non-toxic "chicken AIDS virus" - bursal virus DNA, which can be extracted and mass produced to prevent this "chicken AIDS" vaccine According to reports, like humans, chickens also have "AIDS" - bursal disease The bursa of Fabricius, an immune organ that functions like human lymph nodes, will be destroyed completely when the latter is infected by the virus, which will make the chicken lose the immunity against the disease, and any invasion of bacteria and virus may lead to its death Bursal disease is a highly infectious and serious threat to the chicken industry, "chicken AIDS", it is easy to break out in large-scale chicken farms In July last year, Chen Yongfu, the chief expert of the "animal mammary gland bioreactor" project of the National 863 program and professor of Agricultural University of China, etc., cultivated five genetically modified sheep carrying the DNA of chicken bursal disease virus The group of sheep showed up publicly in the Shenzhen exhibition hall of the high tech fair Among them, one ewe can extract 2 grams of non-toxic live vaccine per liter of milk, which is the first one in China Transgenic sheep expressing the vaccine efficiently.
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