In the HNE cells obtained from both groups of subjects, pretreatment with L‐carbocisteine (72 h) prior to infection reduced the amount of NF‐κB p50 and NF‐κB p65 in nuclear extracts compared to the levels observed in the cells pretreated with vehicle prior to RV14 infection (Table 3). Here, NFKB1 is linked to infection.