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November 2006
October 2006
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June 2006
Bacteria have their own immune system protecting against outside DNA
by YukuanMark
Bacteria like Salmonella have a complicated immune system that helps them recognize and isolate foreign DNA trying to invade their cell membrane, according to a University of Washington-led study in the June 8 issue of Science Express. The research, which
December 2005
宿主的免疫系統是病菌的殺手，亦或幫手？
by YukuanMark
& 1 other
人體的免疫系統可以防禦外來病源生物侵襲，以保障人體的健康，但在人的鼻腔及咽喉裡仍有許多不同種的細菌群聚，且細菌間會彼此競爭空間及資源。美國賓夕法尼亞州大學Jeffrey N. Weiser的研究團隊發現免疫系統也會充當某細菌群聚的幫手來消滅其他的競爭者，以空出多餘的空間供該菌種擴大勢力。
July 2005
1
(7 marks)
