Abstract
As human embryonic stem (ES) cells differentiate, they express increasing levels of the telltale tags the body uses to distinguish between native and foreign cells. The findings, published online this week by the Proceedings of the National Academy of Sciences, confirm that a patient9s immune system would be likely to reject transplanted tissues derived from ES cells. Scientists will therefore have to find ways to reconcile the body9s defense system with the transplanted cells.

This publication has 0 references indexed in Scilit: