To create this image, which won the popular vote in the 2008 Nikon Small World contest, 22-year-old Tomas Pais de Azevedo, a graduate student in evolutionary and developmental biology at the University of Lisbon in Portugal, removed an eight-day-old, two-inch-long chicken embryo from its egg and stained it with a dye that binds to cartilage. The process took three days, after which he photographed the embryo through a stereo microscope. The dark-blue areas of the chick indicate where the cartilage will ultimately solidify into bone. By tracking how bones develop, and in what order, it's possible to see how various genes control the overall development of vertebrate organisms.
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机译:为了制作这张在2008年尼康小世界大赛中赢得选票的形象,现年22岁的托马斯·佩斯·德·阿兹维多(Tomas Pais de Azevedo)是葡萄牙里斯本大学进化与发育生物学的研究生,他删除了为期8天的从鸡蛋中取出两英寸长的旧鸡胚,并用与软骨结合的染料对其进行染色。这个过程花了三天,之后他通过立体显微镜拍摄了胚胎。雏鸡的深蓝色区域表示软骨最终将固化到骨骼的位置。通过跟踪骨骼的发育方式和顺序,可以看到各种基因如何控制脊椎动物的整体发育。
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