We don't want someone skipping out saying, 'I took all sorts of drugs and I'm negative,' or 'I can continue to do what I was doing.' It's really an opportunity to do some prevention work.

There are no comparative studies on avian flu. We're not saying drugs shouldn't be given. We just don't know. The jury is out.

It seems like the drug industries are saying, 'The older drugs are available and they're cheap so we've done our thing.

He appeared to be on drugs. He was kind of weird, saying kind of sick things.

This is a rapidly evolving field, and it's bringing a lot of different disciplines together. Unlike drugs or radiation, which are given to the patient, do their damage, and leave, what we're doing is asking the patient's own immune system to mount an attack on the cancer. It's very, very different from standard chemotherapy.

We are not saying we are confident these drugs will not cause liver toxicity,