She is about to begin a clinical trial to test Avastin in lung cancer patients whose cancer has spread to the brain.

FORBES: Assessing Avastin's Risk

If doctors can test just these nodes, then this should present enough evidence of spread, or lack of it.

BBC: 'One stop shop' for cancer

Kennedy now contended that both sides had a vital interest in stopping the spread of nuclear weapons and slowing the arms race--a contention which led to the test ban treaty of 1963.

WHITEHOUSE: John F. Kennedy

Learning a skill depends on building new memories, and studies show that we learn new information most efficiently if we spread our practice out rather than trying to cram it all into a short period (like before a test).

WSJ: How a Middle-Aged Dog Learned New Guitar Tricks