UNDATED HealthFirst reporter Leslie Toldo tells us why humans seem to thrive with at least one type of transplant from pigs. We are talking about tissue transplants, and from hernias to plastic ...

The human guinea pig may soon be extinct. He (it’s usually a ‘he’) has become endangered through the advances of cell culture science, which increasingly close the gap between in vitro testing (the ...

The earliest stage of human embryo development—known as pre-implantation—is a critical window. During this phase, the first cells form, setting the stage for the embryo’s viability, implantation in ...

The first few days of a human embryo’s development, known as pre-implantation, are important. It’s when the first cells are formed, and these decide if the embryo can survive, how it will implant in ...