CCL20 and infection: As part of our initial characterization of the interaction between A. fumigatus and a Tert-immortalized human small airway epithelial cell line (HSAEC1-KT), we measured the secreted protein levels of interleukin-1α (IL-1α), C-X-C motif ligand 8 (CXCL8), CXCL10, and C-C motif chemokine ligand 20 (CCL20) following in vitro infection with the Af293 strain.