标签:茎细胞 相关文章
Cellular phones, Voice Over IP phones, Internet phones. Wow, so many choices that now provide you with opportunities to learn languages while you're on the go (Mobile Learning). In the past, students were either limited to learning languages in a cla
Health Report - A Way to Make New Eggs in Women? 健康报道 - 产生新卵子的新途径 This is the VOA Special English Health Report. 这里是美国之音慢速英语健康报道。 New research could raise hope for women who are having trouble
New Hope for Spinal Cord Injuries By Patricia Anstett / 2005, Detroit Free Press , Knight Ridder Newspapers. Distributed by Tribune Media Services. A world of patients with spinal cord injuries is wat
台湾籍旅美老师今天交给我们的句子是: At the same time, I see much more about the flower than he sees. I could imagine the cells in there. The complicated actions, which also have a beauty. 同时,我也能比他更深入地看这朵
the speaker was actually a total loser in marriage. She has divorced for three times. 这个做演讲的女人其实在婚姻中是很失败的,她先后离了三次婚。 But she proposed a great idea of marrying yourself. 但是在她所有的恋爱
Fish do drink water, but how they consume it depends on where they live. Water gets into a fishs body through osmosis, the process in which water diffuses from a higher to a lower concentration. 鱼儿确实喝水,但它们怎样喝水却取决于其
Fingernails. Theyre good for scratching, biting, clipping, and polishing. But what are they, in fact? 手指甲可以被用来划,咬,剪,磨。但是事实上,它们究竟是什么呢? Although nails may look simple, they actually have var
Cloning offers the possibility of making exact copies of ourselves. Should this be allowed? What benefits and dangers may cloning bring? 克隆技术使我们有可能分毫不差地复制自己。这一
加拿大广播公司:研究发现,跟陌生人相比我们与朋友之间的基因更为相似,这一发现为物以类聚,人以群分的说法提供了新的佐证.遗传学家发现,无血缘关系的朋友之间有百分之一的基因是相似的
美国广播公司:一项调查显示,每7个美国人中,就有一个人愿意为了手机而对朋友置之不理.现在来看美国广播公司的这篇报道. 学生频繁看手机 NBC News: A recent survey found that one in seven Americans wou
在《科学》杂志上的一篇研究中,研究者们描述了青春期时人体内细胞和分子的改变,正是这种改变促使这段时期的人们智力水平低下。 Ah, puberty. A time for raging hormones, growing independence and bei
芝加哥一水回收厂发生爆炸 This is AP News Minute. A hearse carrying Senator John McCain's casket arrived at the north Phoenix baptist church for a public memorial service. Inside, he was eulogized as a true American hero and a terrible dri
建筑设计师们像自然借鉴灵感的创意比比皆是,比如著名的悉尼歌剧院,比如北京奥运会的主场馆鸟巢。可是你想象过,自然界的有丝分裂能带给设计师什么灵感吗?可不是什么长得像DNA一样
When you hear the word mutation, you may think of something destructive, or of Marvels X-Men. But some mutationswhich are just differences in DNAcan be historic. Take, for example, a genetic sequence found in the vast majority of people from Tibet. M
Todd: OK, Jeanna, you like the computer! Jeanna: Yes, I do. Todd: OK. Talk to us about computers. Jeanna: Well, I go on the computer a lot and I talk with friends through AOL instant messenger. And I just moved from my hometown to Sacramento so it's
Have you ever taken a good look at your dog and wondered, where did this creature come from? Sure, you know your dog came from the local shelter or a pet store, but what about before that? If you were able to trace your dog's lineage back to its orig
The discovery of cells in the brain that act as the body's internal global positioning system, which won three scientists the Nobel Prize for medicine on Monday, opens an intriguing new window onto dementia. Since these spatial cells are among the fi
Cells and Temperature Cells cannot remain alive outside certain limits of temperature, and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only within a narrow range around 37 ℃
摆脱特困户 Find the natural scent that awakes you 找到自然的味道,唤醒你的每一个细胞! Smelling an aromatic oil, plant or herbis one way to wake up our senses. Try placing a pot of fresh mint or basil on your office desk, or ap
台湾籍旅美老师今天交给我们的句子是: Blood is the tissue that not only carries cells that transport oxygen, for example, the red blood cells, or fights infectious diseases, but it also carries messenger molecules, hormone-like facto