 The year's best pictures from the world of medicine
[ 2009-10-21 11:41 ]
3 人工試管受精
這張顯微照片清晰地捕捉到人工試管受精(IVF)過程。圖中的卵細(xì)胞(棕色球體)要比精子細(xì)胞大許多，其周圍圍繞著保護積云細(xì)胞(圖中黃色部分)，卵細(xì)胞周圍的薄膜是卵膜，精子頭部攜帶著酶試圖溶解卵膜，從而與卵細(xì)胞結(jié)合。圖片是由斯匹克－沃克爾(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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