منابع مشابه
Bush faces stem cell pressure
looks set to come under increasing challenge this fall as a senior Republican, the Senate majority leader, Bill Frist, said this summer he would support legislation to remove some of the administration's limitations on such research. The move is likely to result in a showdown between the president and the Senate. Frist, a heart and lung transplant surgeon, and a close ally of the president, had...
متن کاملBush turns amber on stem cell research
In a short speech aired on national television on August 9, US President George W. Bush announced that the National Institutes of Health (NIH) will be allowed to fund work with human embryonic stem (ES) cell lines — but only if the work involves lines that were established before the president’s announcement. The decision was greeted with measured optimism by many scientists, who await further ...
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Without careful pruning, a rose bush would grow into a single stem with leaves. This is why gardeners invest in a good pair of clippers—cutting the leading shoot helps activate axillary buds which typically form at the base of each leaf near the stem and give rise to new shoots. Yet, axillary buds sometimes remain dormant despite pruning, and many plant species activate branching without a snip...
متن کاملThe many faces of hematopoietic stem cell heterogeneity
Not all hematopoietic stem cells (HSCs) are alike. They differ in their physical characteristics such as cell cycle status and cell surface marker phenotype, they respond to different extrinsic signals, and they have different lineage outputs following transplantation. The growing body of evidence that supports heterogeneity within HSCs, which constitute the most robust cell fraction at the fou...
متن کاملEmbryonic Stem Cell Research: A Decade of Debate from Bush to Obama
On August 9, 2001, U.S. President George W. Bush introduced a ban on federal funding for research on newly created human embryonic stem (ES†) cell lines. The policy was intended as a compromise and specified that research on lines created prior to that date would still be eligible for funding. Seventy-one lines from 14 laboratories [1] across the globe met Bush’s eligibility criteria, and scien...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2005
ISSN: 0960-9822
DOI: 10.1016/j.cub.2005.08.038