Breakthrough in delivering drugs to the brain

For once the word 'breakthrough' seems entirely appropriate - both for context and for significance.

I think this is related to this article in The Economist re: a method to treat "mad cow" disease (Creutzfeldt-Jakob Disease): <a href="http://www.economist.com/node/18276254" rel="nofollow">http://www.economist.com/node/18276254</a>