Fig. 4From: Torquetenovirus detection in exosomes enriched vesicles circulating in human plasma samplesElectron microscopy of EEVs fraction. EEVs of about 90–100 nm with electron lucent core are shown. In few EEVs (white arrow), an electron dense content (~ 40–60 nm) which looks like a virus particle is observed. Calibration bar = 200 nmBack to article page