2017年3月22日 星期三

Sperm, female egg. 精子, 雌性卵

SCIENCE PHOTO LIBRARY
Millions of sperm set off but only a few will complete the journey
Sperm swimming technique 'all down to simple maths' - BBC News
http://www.bbc.com/news/health-39292913
SCIENCE PHOTO LIBRARY
精子成功讓卵子受孕的秘密是什麼? - BBC 中文网
http://www.bbc.com/zhongwen/trad/science-39341040

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