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10 slides of each lung were examined by Olympus BX41 microscope and images were acquired by Olympus DP72 digital camera, followed by image analysis using ImageJ software (available from To quantify emphysema, alveolar enlargement and destruction were evaluated by the mean linear intercept (Lm) in 10 randomly selected fields per slide

For some smokers, cigarettes gradually become a way of temporarily masking fatigue that they are actually helping to maintain

Use throat lozenges or cough drops for a dry, scratchy throat

In addition, 39 of the 51 flavors tested contained a concentration of diacetyl that was over the laboratory limit