(CNN) -- A human embryo, containing about a couple hundred cells, is smaller than the period at the end of a sentence. Scientists need strong microscopes to see these precursors to life, and to take ...

Shelby is an assistant editor for The Scientist. She earned her PhD from West Virginia University in immunology and microbiology and completed an AAAS Mass Media fellowship. View full profile. Learn ...

A first-in-human trial shows the feasibility and safety of delivering placenta-derived stem cells during prenatal ...

Human pluripotent stem-cells (HPSCs)—including human embryonic stem-cells and human induced pluripotent stem-cells—are reshaping the landscape of regenerative medicine.1,2 In Parkinson's disease, ...

A lot happens in the first month of human embryo development as a single cell morphs into multitudes. Yet despite its significance, this period is basically a “black box” to researchers, says stem ...

A top congressional Republican on Sunday criticized President Barack Obama's expected decision to reverse the Bush administration's limits on embryonic stem-cell research, calling it a distraction ...

The International Society for Stem Cell Research (ISSCR) Embryo Models Working Group has released updated recommendations for the oversight and regulation of stem cell-based embryo models (SCBEM), ...

A team led by University of Osaka researchers has developed a technique to generate testes from mouse embryonic stem cells ...

STEM CELLS are undifferentiated "master cells" in the body that can develop into differentiated tissues, such as bone, muscle, nerve, or skin. Stem cell research may lead to exponential improvements ...

Descriptions of the embryo go back at least to the time of Aristotle, but it has only been since the late 19 th century and early 20 th century that advances in experimental approaches allowed ...