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For nonstripped samples, the aged particles of marijuana smoke were larger overall than those of tobacco smoke with the CMDs being on average 23% (6%) and 29% (2%) larger for the aerodynamic (477 vs 389 nm) and mobility (410 vs 318 nm

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British American Tobacco plans $47bn Reynolds merger Published British American Tobacco is planning to merge with its US partner Reynolds in a deal valued at $47bn (38bn)

But the light turns blue for excellent, green for good, yellow for moderate, orange for polluted, and red for very polluted air

is a pediatric resident physician at the University of Chicago and a contributor for the ABC News Medical Unit.