Lungs are exposed to external oxidants from the environment as in harmful particles and smog. causing oxidative stress in the lungs and consequently respiratory ailment. The NF-E2-related factor 2 (Nrf2) is the one with transcriptional regulatory function. while its related protein Kelch-like ECH-associated protein 1 (Keap1) inhibits Nrf2 activity. https://www.bekindtopets.com/top-super-H-S-Motorsports-122011-Intercooler-Pipe-Upgrade-Kit-2011-2016-Ford-6-7-Powerstroke-hot-value/