10.1371/journal.pone.0146658.g002 Robin Wood Robin Wood Carl Morrow Carl Morrow Clifton E. Barry III Clifton E. Barry III Wayne A. Bryden Wayne A. Bryden Charles J. Call Charles J. Call Anthony J. Hickey Anthony J. Hickey Charles E. Rodes Charles E. Rodes Thomas J. Scriba Thomas J. Scriba Jonathan Blackburn Jonathan Blackburn Chacha Issarow Chacha Issarow Nicola Mulder Nicola Mulder Jeremy Woodward Jeremy Woodward Atica Moosa Atica Moosa Vinayak Singh Vinayak Singh Valerie Mizrahi Valerie Mizrahi Digby F. Warner Digby F. Warner The in-built APS characterizes the particle size distribution spectrum within the RASC. Public Library of Science 2016 polymerase chain reaction tuberculosis RASC pcr disease transmission imaging host Respiratory Aerosol Sampling Chamber sampling scanning electron microscopy mtb sample tb 2016-01-28 12:41:24 Figure https://plos.figshare.com/articles/figure/_The_in_built_APS_characterizes_the_particle_size_distribution_spectrum_within_the_RASC_/1641910 <p>(A) Typical background particle spectrum before and after air wash. Note the 10-fold decrease in particle counts across all size ranges following the air wash. Total count from a typical five seconds of sampling. (B) Artificial dry release of fluorescent polystyrene latex (PSL) microspheres. The APS instrument groups all particles with an aerodynamic diameter less than 0.523 μm in the number bin on the far left of each chart. Note that the 1μm release (b) contained approximately ten times more particles in the release. Total count from ten seconds of sampling at the peak of particle concentration. (Inset) corresponding SEM images of the released particles.</p>