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Internalization of exosomes from the BALF of mice exposed to NTHi lysate or air. (A) LLC cells demonstrated uptake of labeled-exosomes (green fluorescent dye), images are taken at 24 h co-culture with LC cells. Scar bar = 100 μm. (B) the percentage of positive LLC cells engulfing labeled-exosomes (n = 10). Results are presented as means ± SEM. (*P < 0.05).
