• 脐带干细胞能转化为其它细胞

    12-01-18 For the first time ever, stem cells from umbilical cords(脐带) have been converted into other types of cells, which may eventually lead to new treatment options for spinal cord injuries and multiple sclerosis(多发性硬化) , among other nervous sy...

  • 观察病毒细胞的内部活动

    12-01-13 Since the discovery of the microscope, scientists have tried to visualize smaller and smaller structures to provide insights into the inner workings of human cells, bacteria and viruses. Now, researchers at the National Institute of Arthritis and Mu...

  • 基因的“遥控”功能

    12-01-10 As an embryo develops, different genes are turned on in different cells, to form muscles, neurons and other bodily parts. Inside each cell's nucleus, genetic sequences known as enhancers act like remote controls, switching genes on and off. Scientis...

  • 胚胎干细胞对灵长类动物的作用

    12-01-09 Newly published research by scientists at Oregon Health Science University provides significant new information about how early embryonic stem cells develop and take part in formation of the primate(灵长类动物) species. The research, which took pl...

  • 老年人健忘的原因

    11-12-30 New research links 'silent strokes,' or small spots of dead brain cells, found in about one out of four older adults to memory loss in the elderly. The study is published in the January 3, 2012, print issue of Neurology, the medical journal of the A...

  • 大脑结缔细胞就像胶水

    11-12-30 Glia cells, named for the Greek word for glue, hold the brain's neurons together and protect the cells that determine our thoughts and behaviors, but scientists have long puzzled over their prominence(突出,显著) in the activities of the brain ded...

  • 涂抹式太阳能电池有望问世

    11-12-23 Imagine if the next coat of paint you put on the outside of your home generates electricity from light -- electricity that can be used to power the appliances and equipment on the inside. A team of researchers at the University of Notre Dame has mad...

  • 半导体蚀刻技术获重大突破

    11-12-23 Creating semiconductor structures for high-end optoelectronic(光电子的) devices just got easier, thanks to University of Illinois researchers. The team developed a method to chemically etch(蚀刻) patterned arrays in the semiconductor gallium ars...

  • 脑细胞如何工作

    11-12-22 University of Miami (UM) biology professor Akira Chiba is leading a multidisciplinary(有关各种学问的) team to develop the first systematic survey of protein interactions within brain cells. The team is aiming to reconstruct genome-wide in situ pro...

  • 维生素E的天然功能

    11-12-21 It's rubbed on the skin to reduce signs of aging and consumed by athletes to improve endurance but scientists now have the first evidence of one of vitamin E's normal body functions. The powerful antioxidant found in most foods helps repair tears in...