Embryonic stem cell - ScienceDaily: News, Videos & Articles in Science, Health, Tech

Embryonic stem cells (ESCs) are stem cells derived from the undifferentiated inner mass cells of a human embryo. Embryonic stem cells are pluripotent, meaning they are able to grow (i.e. differentiate) into all derivatives of the three primary germ layers...

【可愛】被剃毛的狗狗....自尊心全無了~~

好可憐...但又好可愛>////...

開播了也不講...偷看美女圖被抓包了

大冏!!哈哈 ...

外國人的暑假vs你的暑假這就是差異

左邊的圖  好像只有天色的變幻...XD ...

為什麼這個美女願意嫁給怪獸 原來秘密就是.....

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