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He further got Fowler to assert that low oxygen levels played a role in Floyd's death and that he didn't exhibit any signs of a fatal fentanyl overdose.

Blackwell also got Fowler to criticize police officers for not offering medical care to Floyd.

\"Are you critical of the fact he wasn't given immediate emergency care when he went into cardiac arrest?\" Blackwell aside.

\"Yeah,\" Fowler said, \"as a physician I would agree.\"

ABC News' Whitney Lloyd and Bill Hutchinson contributed to this report.

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