ANOTHER crack is forming in the increasingly fragmented world of stem cell technology. Last week, Chris Shaw and his colleagues at King’s College London said they thought that it might be possible to derive stem cells from embryos cloned using rabbit eggs – one way to get over the shortage of human eggs for research.
One team, led by Hui-Zhen Sheng at the Shanghai Second Medical University in China, claims to have already succeeded in taking ESCs from such rabbit-human “embryos” (Â鶹´«Ã½, 23 August 2003, p 14).
But now Bob Lanza of Advanced Cell Technology in Worcester, Massachusetts, has…
