CDR: Re: Whipped Europeans

At 04:17 PM 9/3/00 -0400, David Marshall wrote:

On the topic of the blood-brain barrier, another example is compounds

There's also a trick where you can add an acetyl group to a small molecule (not protein) to increase transport. Do it to salicylic acid, you get aspirin. Do it to morphine, you get heroin. FWIW