Two independent research teams have successfully regenerated mouse brain circuits in mice using neurons grown from rat stem cells. Both studies, using interspecies blastocyst complementation to study ...

Creating a functional lung using interspecies chimeric animals is an attractive albeit challenging option for lung transplantation, requiring more research on the viable conditions needed for organ ...

Researchers from Wake Forest University School of Medicine and Advanced Cell Technology, Inc. (ACT) of Worcester, Massachusetts, reported in Science magazine that they have successfully developed cell ...

Embryonic stem cells (ES cells or ESCs) are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage pre-implantation embryo. Human embryos reach the blastocyst stage ...

Stem cells are unspecialized cells that have the remarkable ability to develop into various types of cells in the body. They serve as a repair system, dividing essentially without limit to replenish ...

Seals give birth only when conditions are right. After mating, a female seal can delay implantation of the embryo in the ...

It’s one of life’s most defining moments—that crucial step in embryonic development, when an indistinct ball of cells rearranges itself into the orderly three-layered structure that sets the stage for ...

Scientists are using human stem cells to create a structure that mimics a pre-embryo and can serve as a research alternative to a real one. They say these “blastoids” provide an efficient, ethical way ...