Identification of key step in embryo development offers fertility treatment hope

The findings were published in the journal Nature (Katie Collins/PA)

Scientists have identified a key process in the very early stages of embryo development that they believe could pave the way for improved fertility treatments and help those struggling to conceive.

Researchers have discovered that after fertilisation, the very first step in human development is the initiation of placenta creation, an organ responsible for providing oxygen and nutrients to a growing baby.