4 d) were significantly improved with passage 3 cells only, although bacterial clearance exhibited a strong trend at all hMSC passages.
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Umbilical cord-derived CD362<sup>+</sup> mesenchymal stromal cells for E. coli pneumonia: impact of dose regimen, passage, cryopreservation, and antibiotic therapy.
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There were no significant changes in IL-1β concentration, though there was an observed trend towards increase with later passage (Fig. 4 g).