Donor's stem cells flown to leukemia patient

Beijing experienced its first snow of this winter on Tuesday, but it had little effect on air traffic to and from the capital, much to the relief of Ye Huifeng, a 36-year-old who is recovering after donating bone marrow stem cells.

The 200 milliliters of stem cells donated by Ye was scheduled to be onboard a 3 pm flight to Seoul, capital of South Korea, where a 10-year-old boy was awaiting a cell transplant to treat his leukemia.

Transplantation of bone marrow helps stimulate growth of the patient's own marrow and restores a leukemia patient's immune system.