医学生物学(绪论).ppt

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1、发现了细胞周期的关键分子调节机制, 2001年诺贝尔生理医学奖H. Robert HorvitzJohn E. Sulston 对器官发育的遗传调控和细胞程序性死亡方面的研究Peter AgreRoderick MacKinnon 因对细胞膜水通道，离子通道结构和机理研究而获奖Richard AxelLinda B. BuckBarry J. MarshallJ. Robin WarrenAndrew Z. FireCraig C. Mello 干细胞类型：胚胎干细胞 骨髓干细胞 神经干细胞成体干细胞 上皮干细胞 肝干细胞 胰腺干细胞 皮肤干细胞Dolly and her daughterTh

2、e process of cloning DollyIs there any practical value to such technology?意大利科学家花三年时间经过226次试验才成功克隆出“皮埃拉斯二世” 。皮埃拉斯一世是被阉割的阿拉伯赛马，曾经二次获得世界冠军。这“为挽救珍稀马种带来曙光 Conservation of endangered species Environmental influenceBiological diversity AgricultureTherapeutic cloing: Clinic therapy Somatic cell nuclear tra

3、nsfer directdifferentiationreplace therapyEstablish of ES cellsThe cell is the functional unit of organisms. All metabolic activity is based on cells. Human fetal development. (a)At 5 weeks, limb buds, eyes, the heart, the liver and rudiments of all other organs have started to develop in the embryo

4、, which is only about 1cm long. (b)Growth and development of the offspring, now called a fetus, continue during the second trimester. This fetus is 14 weeks old and about 6cm long. (c)The fetus in this photograph is 20 weeks old. Now the fetus grows to about 30cm in length.Whale GTGTGGTCTCG TGATCAAAGGCGAAAGGTGGCTCTAGAGAATCCCHuman GTGTGGTCTCGCGATCAGAGGCGCAAGATGGCTCTAGAGAATCCC