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. 2020 Sep 30;319(6):L893–L907. doi: 10.1152/ajplung.00107.2020

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Fig. 1. — Negative staining electron microscopy and size analyses of dust extracellular vesicles (EVs). A: dust EVs were visualized by negative staining electron microscopy using uranyl acetate. A representative electron micrograph with sizes of dust EVs that were randomly selected for measurement is shown. B: a representative size distribution of dust EVs obtained by nanoparticle tracking analysis (NTA) using NanoSight NS300 instrument. EVs (n = 15) isolated from 3 different dust samples were analyzed by NTA.