Developmental biology: Placenta key to fetal growth rate
Nature 468, 7324 (2010). doi:10.1038/468603d
Gestation period varies widely in the mammalian world, with some species developing twice as fast as others in the womb. This is largely because of differences in the arrangement of fetal and maternal tissues in the placenta.Isabella Capellini at Durham University, UK, and her
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