When exposed to specific growth factors, the stem cells may embryonate and develop into early embryos.

The embryonated eggs were carefully incubated to ensure healthy development.

Embryonation of the sea turtle eggs was closely monitored by the conservation team to ensure healthy hatchlings.

The biologists carefully labeled each dish containing embryons before the experiment began.

In the lab, the scientist carefully observed the development of several embryones under the microscope.

When conditions are right, the parasitic worm embryonates within the host's tissues.

The researchers observed an embryoniclike cluster of cells forming at the wound site.