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On the 13th day of the trial, Judge Cahill rejected the defense's claims that prosecutors failed to prove that Chauvin’s actions last year killed Floyd. A series of medical experts brought forth by the prosecution have stated that Floyd died from a lack of oxygen [from the knee on his neck].
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[Chauvin's] defense argued Wednesday that Floyd’s underlying heart disease played a role, with a retired forensic pathologist called by Chauvin’s lawyers testifying that Floyd died from cardiac arrhythmia caused by multiple factors. David Fowler, a former Maryland medical examiner, also suggested that Floyd may have had carbon monoxide poisoning because of his exposure to the nearby police vehicle’s exhaust.
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Another witness for the defense, Barry Brodd [who owns a use-of-force consulting company], argued that Chauvin was justified in his actions used against Floyd. Brodd's testimony stands in contrast to Minneapolis police officers who testified last week that Chauvin’s actions were not in line with department standards.