In Western Kentucky, researchers are using tobacco for a cancer vaccine study .
They're using a drug from tobacco plants that could be used in preventing cervical cancer in India.
In India there are about 120,000 new cervical cancer cases each year. About 80-percent of those are untreatable.
It's a vaccine that would be similar to Gardasil, which the federal government approved in 2006 to stop strains of sexually transmitted diseases that cause cervical cancer.
If successful, the tobacco-based method is estimated to cost about $3 for three doses, compared to about $360 for three doses of Gardasil.