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北京大学英语新闻网/Peking University News KFAS. It was held annually for three years. The fourth meeting —― Beijing Forum 2007 is scheduled to be held in Beijing on November 2-4 this year, which will be attended by over 400 scholars and experts from all over the world. Edited By : Wang Yi Source : www.beijingforum.org Related Topic : � Beijing Forum 2007 Related News : ■ Preparation for Beijing Forum 2007 Sets Off ( Sunday 2007--0-3- 26: 0 ) Related Feedback: 574
北京大学英语新闻网/Peking University News Prof. Gu Jiang: The H5N1 virus through mother-to-child transmission PKU NEWS 2007--10--08 http://ennews.pku.edu.cn/news.php?s=191772314 Peking University, Beijing, October 7, 2007: Studies of the post-mortem tissues of one man and one pregnant woman as well as testing the fetus of the woman have revealed that HVN1 bird flu is more invasive than previously thought. Gu Jiang, a professor at the School of Basic Medical Sciences of the Beijing-based Peking University, and colleagues, has studied the post-mortem tissues of one man and one pregnant woman as well as testing the fetus of the woman. The findings of the two post mortems reveal that the H5N1 strain of avian (bird) flu is more invasive than previously thought. The team found the bird flu virus genetic material and antigens in the lungs, cells of the trachea and the lymph nodes, neurons in the brain and in cells of the placenta. The examination of the four-month-old fetus found both viral genetic material and antigens of H5N1 virus in the lungs, circulating cells of the immune system and in cells of the liver, suggesting the virus can overcome maternal immune protection of the fetus. Prior research had shown that the H5N1 could move beyond the lungs. However, full autopsies of people who have died after H5N1 infection were not conducted. A full autopsy would reveal where the virus spreads in the human body, but were not done for various reasons, including religious objections. "The study could change a lot of our previous views. For example, the trachea was formerly thought uninfected by H5N1 and this was used to explain that H5N1 could only infect the lower respiratory system, but our studies have clearly shown it is not such a case." Gu said. Viral genetic material in the intestinal mucosa was also found, but no viral antigens were found. This suggests that the virus does not directly infect intestinal cells. "How they arrive at the place and replicate remains unknown," Gu says. The study results have been published in a British medical journal "The Lancet". 575
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指导教师刘乃勇本卷编辑
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