The creation of a woolly-mouse embryo marks a significant leap in the field of de-extinction, bringing us one step closer to reviving the iconic woolly mammoth. By combining advanced gene-editing ...

Scientists have created a 6-legged mouse embryo with an extra pair of hindlimbs at the expense of their external genitalia. But far from creating a monster, this rudimentary rodent provides important ...

This is the first-ever study that shows mammals may be able to thrive in space. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Researchers have ...

It’s challenging to sustain a pregnancy when food is short, or conditions are otherwise tough. That’s why many mammalian embryos can postpone their growth to get through periods of environmental ...

DENVER -- After 2017 guidelines recommended single embryo transfer in most situations, the multiple birth rate dropped by 58%, according to a large national registry study. Moreover, single embryo ...

One of the first documents patients sign when starting in vitro fertilization asks them to consider the very end of their treatment: What would they like to do with extra embryos, if they have any?

Monozygotic twinning itself after elective single embryo transfer is uncommon, occurring in no more than roughly 3% of cases. Conjoined twins are far rarer still, with fewer than 20 cases reported ...