medical reserach

Zombie cells central to the quest for active, vital old age

A growing number of scientists is trying to help people reach a goal humans have been chasing throughout history: staying active and vital in old age. They are part of the skyrocketing scientific field of cellular senescence, which is built…

Scientists use stem cells to create synthetic mouse embryos

Scientists have created synthetic mouse embryos from stem cells without a dad's sperm or a mom's egg and womb. The lab-created embryos mirror natural mouse embryos up to 8 ½ days after fertilization, with structures including one like a beating…