(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 ...

The US biomedical funding agency also hints at future restrictions on research involving human embryonic stem cells.

The prohibition halts support for projects both inside and outside the N.I.H. President Biden had restored funding after an ...

Scientists at the University of California, Santa Cruz (UCSC), used CRISPR to engineer cellular models of embryos that mimic what happens in the first few days after reproductive cells meet. These ...

Megan Molteni reports on discoveries from the frontiers of genomic medicine, neuroscience, and reproductive tech. She joined STAT in 2021 after covering health and science at WIRED. You can reach ...

A US biotechnology company says it has developed a way to make human embryonic stem cells without destroying the original embryo. The development, published online today in the journal Nature, could ...

An Aug. 11 article about stem cells misspelled the name of National Institutes of Health official Lana Skirboll. (Published 8/13/01) For all the restrictions President Bush imposed on federal funding ...

Some of the damage caused by a heart attack can be reversed in mice using stem cells, induced from connective tissue cells, say US researchers. The proof-of-concept study is the first attempt to use ...