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Mean aerosol concentrations generated from the experiments using a 109 cfu/mL spore suspension. All tests were performed in triplicate, except serial dilution 1 mL (n = 4) and 10 mL (n = 4), vortex mixing universal 1 mL (n = 4) and 10 mL (n = 4), handshake universal 1 mL (n = 4) and 10 mL (n = 4), and plating with blue loop and spreader (n = 5). Error bars are standard deviations of the means.
