FIG 1.

E-cigarette aerosols reduce the growth of S. sanguinis and S. gordonii. (A) Overnight cultures of S. sanguinis were diluted 1:10 into e-cig aerosol-pretreated medium. OD₆₀₀ was measured every 5 min over the course of 8 h. The average was calculated and plotted for OD₆₀₀ (top) and log₂ transform (bottom). (B) Slopes for linear regression of S. sanguinis are presented based on the derivative of the log₂ transform. (C) Overnight cultures of S. gordonii were diluted 1:10 into e-cig aerosol-pretreated medium. Optical density was measured every 5 min over the course of 16 h. The average was calculated and plotted OD₆₀₀ (top) and log₂ transform (bottom). (D) Slopes for linear regression of S. gordonii are presented based on the derivative of the log₂ transform. Data are representative of one biological (n = 3) replicate repeated at least twice. OD₆₀₀ of treatment groups was compared to control OD₆₀₀, using one-way ANOVA (Dunnett’s correction). All conditions were compared to the control; for a complete breakdown of significance, refer to Table 1.