News tagged with embryo cells

Helping horses come to term

It is not only humans that sometimes experience difficulty having children. Horses too have a low birth rate, with many pregnancies failing within the first few weeks after conception. The reason is currently unknown but ...

dateAug 02, 2013 in Plants & Animals
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How birds lost their penises

In animals that reproduce by internal fertilization, as humans do, you'd think a penis would be an organ you couldn't really do without, evolutionarily speaking. Surprisingly, though, most birds do exactly that, and now researchers ...

dateJun 06, 2013 in Plants & Animals
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