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Most smokers don't get COPD, and many non-smokers do,
and it's not because they have a knocked-out gene. So,
this charade hasn't identified anything relating to
the cause of COPD. Instead, it merely presumes that
smoking causes COPD and gropes for a possible
pharmaceutical intervention. Furthermore, the
experimental results reported were on mice, so the
purpose of the humans who were recruited is unclear.