HealthTexas passes controversial stem cell regulations Critics worry that Texas's stem cell rules could put patients at risk from unproven therapies ¿ìè¶ÌÊÓÆµ
HealthGeron halts pioneering stem cell research Biotech giant Geron calls a halt to its stem cell programme – the largest of its kind in the world – including a trial to treat people with paralysis ¿ìè¶ÌÊÓÆµ