President Bush has been under pressure from the Republican Main Street Alliance of 60 House and Senate moderates, including supposedly pro-life U.S. Rep. Jo Ann Emerson, to support stem-cell research.

Mar. 23 -- WEDNESDAY, Oct. 10 (HealthDay News) -- Adult stem cells lack a protein called Oct4, which helps maintain embryonic stem cells in an undifferentiated state, U.S. researchers report. The ...

Welcome to Lab Dish, a First Opinion column on regenerative medicine from Paul Knoepfler. Twenty years ago, the use of human embryonic stem cells in research was among the most fiercely debated topics ...

New scientific methods could one day render animal studies—the standard in research laboratories for more than 100 ...

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery. The process of how a humble single cell becomes an organism fascinates scientists across ...

From the moment an embryo starts to take shape, two-way communication is critical for making sure tissues and organs develop correctly. Two of the first physical structures to form in the embryo are ...

Although embryonic stem cells (ESCs) have been successfully derived from mice and rats, efforts to establish chimeric and germline-competent ESC lines in species beyond rodents have been unsuccessful.

Some parts of our bodies bounce back from injury in fairly short order. The outer protective layer of the eye—called the ...

Stem cells from adult bone marrow can, as well as replacing blood cells, differentiate into liver, heart, muscle, nerve and lung cells. Findings published earlier this month (August 2001) add another ...

Researchers have succeeded in generating high-quality feline embryonic stem cells using sperm and eggs from testes and ovaries discarded during sterilization surgery. As different as they may seem, ...