tobacco mosaic virus on tomatoes Viral Diseases of Tomato in the Greenhouse Tobacco Mosaic Virus Disease On

In late 1933, three talented musicians (including the man who would soon become Roy Rogers, King of the Cowboys) were introduced on a Los Angeles radio station as the Sons of the Pioneers

Dimensions: 5000 x 3240 px | 42.3 x 27.4 cm | 16.7 x 10.8 inches | 300dpi Date taken: 2 April 2011 More information: Different stages of smoking a cigarette

However, they still contain nicotine and other substances that could pose health risks

What is so exciting about our study is that it shows that its never too late to quit some of the people in our study had smoked more than 15,000 packs of cigarettes over their life, but within a few years of quitting many of the cells lining their airways showed no evidence of damage from tobacco. This research is part of the 20 million Mutographs of Cancer project, a Cancer Research UK Grand Challenge initiative