Moreover, consumer taste preferences have led to products with lower tar and nicotine levels.

But they were much more sensitive to nicotine levels.

Yes, they said, nicotine levels change, but that's to enhance flavor.

His bosses cared a great deal about nicotine levels.

It would also prevent any future efforts to control nicotine levels in cigarettes.

He also studied the companies' patents to determine how the nicotine levels were being altered.

They also took urine and hair samples from the infants to measure nicotine levels.

There seems to be an internal sensing system, like a household thermostat, that knows when nicotine levels are too low.

"So we manipulated the blend to raise the nicotine level slightly."

The report added, "This discusses compensation to maintain desired nicotine levels."