 The year's best pictures from the world of medicine
[ 2009-10-21 11:41 ]
3 人工试管受精
这张显微照片清晰地捕捉到人工试管受精(IVF)过程。图中的卵细胞(棕色球体)要比精子细胞大许多，其周围围绕着保护积云细胞(图中黄色部分)，卵细胞周围的薄膜是卵膜，精子头部携带着酶试图溶解卵膜，从而与卵细胞结合。图片是由斯匹克－沃克尔(Spike Walker)提供的。
This image captures the moment of human conception from an in vitro fertilisation (IVF) procedure. The ovum (brown) is much larger than the sperm and is surrounded by protective cumulus cells (yellow). The membrane surrounding the ovum is the zona pellucida. The head of the sperm carries enzymes to dissolve the zona pellucida, allowing it to fertilise the egg. (Image: M. I. Walker) [NewScientist]
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