CCL5 and COVID-19: In conclusion, by studying the mRNA expression of human bronchial organoids, we have found that a series of DEGs (CXCL1, CCL5, EGF, CXCL10, CXCL8), which were also reported in SARS-CoV-2 infected patients, in vitro and in vivo models, plays an important role in the COVID-19 and are helpful for diagnosis and treatment.