He's charged with second-degree unintentional murder, third-degree murder and second-degree manslaughter.
Soon after, he said, the moment came when Mr Floyd did not have "an ounce of oxygen left in his entire body". It was written by members of the editorial board and is unsigned as it represents the opinion of the newspaper rather than the writers. "His heart disease did not cause the the subdual or the neck restraint", Baker said during questioning from the prosecution.
"Mr. Floyd's use of fentanyl did not cause the subdual or neck restraint", Baker said.
On the death certificate, Baker cited "cardiopulmonary arrest complicating law enforcement subdual, restraint, and neck compression" as the cause of Floyd's death.
The expert calculated that at times, Mr Chauvin, who suspected Mr Floyd of passing a fake $US20 bill ($26), was exerting 41.5 kilograms of downward pressure on the suspect's neck.
Dr. Lindsey Thomas, an assistant medical examiner in the Hennepin County medical examiner's office until she went into "semi-retirement" in 2017, said the sheer volume of videos of Floyd's arrest helped support Baker's findings.
Baker testified that he did not watch any videos of Floyd's death prior to performing the autopsy the morning after.
Thomas said any blockage over 70% to 75% could be used to explain death, in the absence of another cause.
"Other things that you think played a role in the death but were not direct causes get relegated to what's known as the "other significant conditions" part of the death certificate", he said. "I don't have a photograph of Mr. Floyd's spleen or Mr. Floyd's liver, either, because those were also grossly normal".
The lack of oxygen resulted in brain damage and caused his heart to stop, the witness said.
'Matt Gaetz Wants to "Date" Your Child,' Says Billboard
Scheller also refused to answer when asked if Greenberg had any incriminating evidence against Gaetz. The newspaper says the aide, Devin Murphy , was Gaetz's legislation director.
He added that Mr Floyd's shallow breaths resulted from a combination of measures applied by police, which included placing him flat on the street, handcuffing his hands behind his back, and the officer kneeling on his back and neck. Thomas drew their attention to abrasions on the left side of Floyd's face and his shoulder - wounds she called "consistent with what it looks like on the video, that he's struggling to push himself into a position where he can breathe".
Thomas noted during her testimony that there is no evidence to suggest Floyd would have died that night in May 2020 except for his interaction with police. While a death by hanging is a type of asphyxial death, she explained, she wouldn't say "asphyxia due to hanging" - she'd just say "hanging".
The defence attorney pressed Thomas by posing a hypothetical question.
"In that very narrow set of circumstances, I would probably conclude that the cause of death was his heart disease", Thomas replied.
Dr. Daniel Isenschmid, a forensic toxicologist with a private company that analyzed Floyd's autopsy, testified that the levels of methamphetamine and fentanyl in Floyd's system were not a factor in his death.
"Were you able to observe whether Floyd's breathing was impacted by the handcuffs and the placement on the street?" prosecuting attorney Jerry Blackwell asked Tobin on Thursday.
"Now, you were asked quite a few questions about Mr. Floyd's preexisting health conditions?" the prosecution asked.
For the first time, a seat designated for Chauvin's family was occupied Friday, by a woman.
When zoomed in, Derek Chauvin's toe was shown to be off the ground as he knelt on George Floyd's neck.
"We aren't just thinking about this particular person and their cause and manner of death", she said. Hennepin County District Judge Peter Cahill overruled the objection, but told jurors it was up to them whether they wanted to follow along with Tobin in feeling their own throats.
Before testimony began, the woman juror told the judge she had "turned on a television and briefly saw coverage" and "saw an image of the courtroom with a woman with dark hair".