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. 2012 Nov 15;7(11):e49208. doi: 10.1371/journal.pone.0049208

Figure 2. Dependence of spot density on the virus concentration as observed by TIRDFM.

Figure 2

(A) Scattering image of viral particles at different concentrations. The virus concentrations were 0, 1.0×104, 3.0×104, 1.0×105, and 3.0×105 pfu/mL. (B) Spot density plotted against virus concentration. The LOD was found to be 1.2×104 pfu/mL. (C) Distribution of the intensity of scattering spots.