There’s a battle for resources going on in there.
Embryos greedily want more resources than their fair share. New research investigates how early in evolution their hormonal tactics arose.
A mouse embryo, like this one, looks a lot like that of a fish, a frog or a human at a certain point in its development.
Scientists have discovered the genetic "switch" that causes many animals, including fish, frogs and humans, to look the same at a certain point in embryonic development.
Knowledge is power. And IVF is expensive.
Clinics aren't compelled to disclose their success rates, so it's impossible to compare all clinics. Even when they do, the pretty graphs on clinic websites can be difficult to understand.
When cells divide, sometimes chromosomes don’t wind up where they need to go.
Embryo via www.shutterstock.com.
Aneuploidy – when a cell has an irregular number of chromosomes – is a major cause of pregnancy loss. Scientists may have uncovered a gene that increases the risk of aneuploidy.
Embryos matter because of what they mean to those for whom they were generated.
Over the past two decades, the frozen preservation of embryos has become routine practice in IVF. What currently happens to embryos next is controlled by overlapping and complicated rules that confuse…