Fig. 1From: The activation impact of lactobacillus-derived extracellular vesicles on lipopolysaccharide-induced microglial cell(A) Isolation and purification of Lac-EVs by ultracentrifugation. (B) Using the NTA to measure the size diameter of Lac-EVs (C) The image of transmission electron microscopy of Lac-EVs. Note All centrifugation steps were performed at 4 °C. The concentration values are presented as the mean ± standard deviation of at least three valuesBack to article page