单词：endothelial cells
单词：endothelial cells 相关文章
Pythons Unlock Human Heart Health Secrets Studying snakes might seem like an unlikely way to help people with heart disease, but a pythons remarkable ability to quickly enlarge its heart during digestion has Colorado medical researchers looking towar
VOA标准英语2011年(十一月)
Why Does My Body Want To Snack? Sometimes a snack quiets your growling stomach. But sometimes you just feel like munching, even though youre not really hungry. French researchers recently found that this second type of snack attack is harder on your
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If blood didnt circulate through our bodies, carrying oxygen and nutrients, we wouldnt be able to live. Blood is so important to life that the body constantly makes new blood. To do this, the body must produce the liquid part of blood, called plasma,
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Why Does Spot Have Spots? In dogs with multicolored coats, white areas have no pigment cells. Black, brown or yellow areas, on the other hand, get their color from special pigment cells. When a dog is just an embryo, these pigment cells travel from t
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Out for the Count 失去知觉之后 If youve ever had major surgery, you probably remember lying down and waking upbut nothing in between. Thanks to the anesthesiologist, during the actual surgery you were out of it: immobilized and insensitive to p
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By Melinda Smith Washington, DC 22 June 2006 watch Stem Cell report A new medical treatment injecting embryonic stem cells and other drugs into paralyzed mice has researchers wondering if it could eventually help humans suffering from Parkinson's an
2006年VOA标准英语（六月）
By Efam Dovi Accra 23 August 2006 In Ghana, a high court in the capital Accra Tuesday sentenced five robbers to more than 300 years in prison in what the police say is a clear sign the country is taking violent crime seriously. The spate of armed ro
2006年VOA标准英语（八月）
Major Progress in Health Through Technology From VOA Learning English, this is SCIENCE IN THE NEWS in Special English. Im Bob Doughty. And Im Faith Lapidus. Today, we tell about a woman who can use signals from her brain to move a robotic arm. We tel
2013年VOA慢速英语(五)月
Scientists say they have successfully tested artificial blood vessels grown in the laboratory. In a heart bypass operation, surgeons typically remove a vein from a patient's leg and use it to replace blocked arteries that feed the muscles of the hear
VOA标准英语2011年(二月)
Simple Technique Could Mean End of Cervical Cancer 防治子宫颈癌的简易方法 Most people think of malaria, AIDS and childbirth as leading causes of death for women in sub-Saharan Africa. But there's another killer: Cervical cancer. There is a
VOA标准英语2014年(三月)
Afterglow Heres an experiment you can try: look at something bright relative to its surroundings, such as a lamp or a sunny window, for ten seconds without blink ing . Then shut your eyes and cover them over with your hands. You will find that the la
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Save the Eggs Vaccine makers crack the eggshell and inject the virus into the white stuff surrounding the yolk. Then they reseal the egg, the embryo becomes infected, and the virus is allowed to copy itself trillions of times over. And they use eggs
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Why are there males and females? Why are there two sexes instead of three, or twelve, or one? On todayss Moment of Science we'll learn why two is the magic number. Let's start with why there is sex at all. When two organisms reproduce sexually, sperm
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Yael: I just read about an exciting technique. Researchers found a way to convert types A and B blood into type O blood--the type that can be transfused into any patient. This advance could help avoid blood shortages in the future. Don: Wow, that is
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If you like curry then you must be delighted to learn that scientists in Ireland have found a certain type of curry spice can kill off cancer cells. The chemical curcumin can be found in the bright yellow curry spice turmeric. Its long thought to hav
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How Cells Get Around 漫步的细胞 A major reason why many cancers are so dangerous is that they metastasize . This means that instead of staying in one place, the cancer cells migrate from their original site to other parts of the body. No wonder
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Cats And Colors 人类能够很容易的分辨出不同的颜色。那么猫呢？虽然猫的视力很好，即使在非常昏暗的光线条件下也能看见，但它对于如何分辨不同的颜色似乎并不擅长。 Cats and Colors on this mo
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Zits Versus Hairy Faces 痤疮是发生在毛囊皮脂腺的慢性皮肤病，发生的因素多种多样，但最直接的因素就是毛孔堵塞。毛孔堵塞以后，毛囊里面的油脂排不出来，越积越多就形成一个个小痘痘，青
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Out for the Count 麻醉药是指能使整个机体或机体局部暂时、可逆性失去知觉及痛觉的药物。根据其作用范围可分为全身麻醉药及局部麻醉药，全身麻醉药及局部麻醉药根据其作用特点和给药方式
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Grow Your Own Dentures 种植牙也叫人工种植牙，并不是真的种上自然牙齿，种植牙而是通过医学方式，将与人体骨质兼容性高的纯钛金属经过精密的设计，制造成类似牙根的圆柱体或其他形状，以外
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