Implantation, one of the most poorly understood phases of early human development, occurs in the depths of the womb, at a ...

The majority of fertilized eggs die and are resorbed into the body. ZEISS Microscopy/Flickr, CC BY-SA As an evolutionary biologist whose career has focused on how embryos develop in a wide variety of ...

The mystery of early embryonic communication is starting to be unraveled thanks to a new stem cell-based model.

Descriptions of the embryo go back at least to the time of Aristotle, but it has only been since the late 19 th century and early 20 th century that advances in experimental approaches allowed ...

Abortion is called “health care”; in reality, it is the killing of a developing human life. The slogan “my body, my choice” ...

Researchers at the Institute for Bioengineering of Catalonia (IBEC) in collaboration with the Dexeus University Hospital have captured unparalleled images of a human embryo implanting. This is the ...

Scientists have sought to capture the first days of how a person comes to be, by recreating those early moments in a lab via models made up of induced pluripotent stem cells, or IPSCs. Subscribe to ...

The team placed blastocysts—embryos 5-6 days after fertilization that were donated following IVF procedures—onto the artificial endometrium. The blastocysts attached to the surface of the lining, ...

Scientists have discovered a kind of “pause button” in early human development. This biological mechanism has long been known in other mammals, but its discovery in humans could aid IVF procedures.