Skip to main content
. 2013 Jun 14;8(6):e66231. doi: 10.1371/journal.pone.0066231

Figure 1. Viability of yeast cells measured by colony formation and MTT assay after plasma treatment.

Figure 1

(A) Relative percentage of colony formations by yeast cells in water, saline, and YPD after treatment with plasma, compared to Ar gas only. Relative colony forming units (CFU) are calculated as follows: relative CFU (%) = (CFU number of plasma treated yeast/CFU number of Ar gas treated yeast)×100. All value are the average of three technical replicates. (B) The relative level of formazan product measured as absorbance at 490 nm in cells treated with plasma in water, saline, and YPD, compared to that in Ar gas treated cells. Yeast cells were treated with plasma and Ar gas for 3 min. Relative absorbance was calculated as relative absorbance (%) = (absorbance at 490 nm in plasma treated cells/absorbance at 490 nm in Ar gas treated cells)×100. Each value is the average of three technical replicates.