fertilization
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Dutch Fertility Clinic May Have Mixed Up Sperm For Dozens Of Couples
A medical lab in the Netherlands is admitting that a “procedural error” may have caused upwards of 26 women to have their eggs fertilised with the wrong sperm.
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Bird Eggs Need Extra Sperm To Make Chicks
You know the story of mammalian fertilisation: millions of sperm enter the vagina, only one fertilises the egg, more than one messes up the embryo, yadda yadda yadda. Turns out that’s not the only way it can work.
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What Happens To Sperm Once They’re Inside A Woman?
A sperm’s journey from vagina to egg is only 15cm long, but it’s a race with attrition.