Fig. 1From: Heterogeneous deposition of regular and mentholated little cigar smoke in the lungs of Sprague-Dawley ratsSchematic of the exposure experiment setup. Little cigar smoke particles were generated inside the smoke machine, which were then directed and introduced to the exposure chamber. Particle size distribution and CO level were monitored by Scanning Mobility Particle Sizer (SMPS) and a CO analyzer. Smoke particulate was collected on a 25Â mm PTFE filter by a SKC pump at 1 L per minute every five minutes for further analysisBack to article page