Fig. 5.

Virucidal activity directly present in the materials. A) GFP expression in Vero cells incubated for 1 ​h with 10⁶ VSV-GFP in DMEM media (positive control) or 500 ​μl of the different materials previously incubated with 10⁶ VSV-GFP viral particles and washed 3 times with 1X PBS. B) TEM micrographs showing the characteristic of the K-nCu and K-nAg materials being incubated with VSV. Top: Image of the materials under study (scale 50 ​nm). Bottom: selected images showing the accumulation of metal-base NP released from the material. C) ICP-MS values Cumulative silver released (▪) from K-nAg and copper released (•) from K-nCu in complete DMEM media at 25 ​°C as a function of time.