RFTN1 and infection: Rftn1 expression in BMDMs was hard to detect in the Rftn1−/− group compared with the WT group, while Rftn1 was overexpressed after recombinant Rftn1 lentiviral vector infection in the Rftn1−/−  + Rftn1OE group, but no significant change was observed after norharman treatment in the Rftn1−/−  + Rftn1OE + norharman group by using qPCR and agarose gel electrophoresis (Fig. 8F, G).