CCL1 and infectious otitis media: Compared to the FMT(AOM/DSS) mice, the expression of genes chemokine C-C motif ligands 1 (Ccl1), 6 (Ccl6), 8(Ccl8), and C-X-C motif ligand 9 (Cxcl9) was decreased remarkably in the FMT(AOM/DSS + BBR) mice.