Sentences with phrase «existing human embryonic stem»

Stem cell advocates have been expressing serious worry that ethical requirements spelled out in the draft guidelines — in particular, informed consent procedures for embryo donors — will rule out the use of many existing human embryonic stem cell lines, including the 21 lines approved under the Bush Administration.

In August of last year, President Bush approved the use of federal funds to support research on a limited number of existing human embryonic stem cell lines.

Not exact matches

Although he never banned this research outright, President Bush limited federal funding for research to the embryonic stem cell lines that existed before August 2001, thus drawing a line at destroying human embryos created after that date.

In August of last year, President George W. Bush announced that scientists who received public research money could use only the human embryonic stem - cell lines that already exist — a decision that dismayed many researchers.

Human embryonic stem cells can exist in two different states that are termed naïve (the ground state) and primed (the state before differentiation into a specialised cell).