Human trials using the new drugs could begin in a year or two, he said.

A spokeswoman for the council said the American trials might use the 63-day period.

The trial for the drug used only 47 people.

Clinical trials using the mask are expected to begin early next year.

The search, capture, trial, and escape had used up the main part of the day.

These trials have used a wide range of doses with mixed results.

The three new trials used different chemotherapies than the first trial.

A clinical trial of chemotherapy using more than one anticancer drug.

Phase I trials of interactions with other drugs used in cancer treatment are also underway.

While subsequent trials will use higher doses, some analysts are skeptical.