Updated

An American and two British researchers won the 2001 Nobel Prize in medicine on Monday for their discoveries in cell development that are expected to lead to new cancer treatments.

Leland H. Hartwell, 61, of Fred Hutchinson Cancer Research Center in Seattle, R. Timothy Hunt, 58, of the Imperial Cancer Research Fund in Hertfordshire, England, and Paul M. Nurse, 52, of the Imperial Cancer Research Fund in London were cited for research that sheds light on how cancer cells develop.

These findings are about to be ``applied to tumor diagnostics ... and may in the long term also open new principles for cancer therapy,'' the Nobel Assembly at Karolinska Institute said in its citation.

The winners will share the prize worth $943,000.