Size distribution using the dynamic light scattering (DLS)
was determined as previously described [5]. Briefly, sam-ples either diluted or not (depending on signal intensity)
in 0.15 M NaCl were measured in Zetasizer Nano ZS
apparatus (Malvern Instruments) equipped with laser of
λ = 633 nm. Size distribution was obtained from meas-ured diffusion coefficients recalculated to the size by
assuming spherical shape of particles. The obtained val-ues represent the diameter of spherical particles which
move in viscous media with the same velocity as TMV.
The size and distribution of TMV was also determined
by NTA. For this purpose TMV samples were diluted 200
times in prefiltered (0.2 μm), sterile PBS to the total vol-ume of 1 ml, then aspirated into an insulin-type syringe
and loaded into the sample chamber. The TMV size and
distribution measurements were collected in triplicates
of 1 min film intervals recorded by the sCMOS camera
and calculated using the NanoSight NTA 2.3 analytical
software.