TNF and respiratory tract infectious disorder: Compared with the mock control, the inflammation-related genes upregulated in bone tissue in response to the respiratory infection of SARS-CoV-2 include C-C motif chemokine 22 (CCL22), interleukin-2 receptor antagonist (IL-2RA), TNF-α, colony-stimulating factor 1 (CSF1), and colony-stimulating factor 2 (CSF2).