Boston Herald
01 January, 1999
The sight in Michelle Pevarnik's right eye is saved by a tissue transplant from her sister Brenda. Dr Stephen Foster, a professor at Harvard Medical School, harvested stem cells - factories that produce various types of cells - from the surface of Brenda's eye under local anesthetic. Normally, the body replaces these cells regularly, but in Michelle's case they were damaged and had to be replaced.
