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Aged dendritic cell (DC) supernatants induce chemokine secretion in primary bronchial epithelial cells (PBECs). Bar graphs depict the gene expression levels of chemokines in PBECs after exposure to aged and young DC supernatants. Gene expression is normalized with actin and expressed as fold increase over PBECs incubated with media without the DC supernatants. (a) CCL20; (b) CCL26; (c) CXCL10; (d) CXCL8. Data are mean±s.e. of six separate aged and young supernatants tested.
