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Each trial answers certain scientific questions in order to find new and better ways to help cancer patients.Information about using the images in this summary, along with many other images related to cancer can be found in Visuals Online.Visuals Online is a collection of more than 2,000 scientific images.smoke contains many of the same substances as tobacco smoke, there are concerns about how inhaled cannabis affects the lungs.
A study of over 5,000 men and women without cancer over a period of 20 years found that smoking tobacco was linked with some loss of lung function but that occasional and low use of cannabis was not linked with loss of lung function.
It cannot be identified as an NCI PDQ cancer information summary unless the whole summary is shown and it is updated regularly. If you want to use an image from a PDQ summary and you are not using the whole summary, you must get permission from the owner.