Stem Cells without Embryos / Little but Alive

Stem Cells without Embryos Scientists have discovered over ten years ago that embryonic stem cells can develop into any organ of the body, and can thus be useful in treating diseases. To refresh your memory, stem cells are those that are taken from newly fertilized eggs, eggs that are in their earliest stages of development, containing no more than 64- cells. Many of these embryos are "extras," having been produced in laboratories for in-vitro fertilization. The sperm are from the father or...