Jurors in the negligence trial of Dr. Conrad Murray were shown a video re-enactment Wednesday of the proper use of the surgical anesthetic propofol.

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Anesthesiology expert Dr. Steven Shafer showed the video at Murray's Los Angeles trial as part of his testimony on behalf of prosecutors who allege negligence on the part of Murray led to the death of Michael Jackson.

Murray, Jackson's personal doctor, is accused of involuntary manslaughter in Jackson's 2009 death. He has pleaded not guilty to allegations he is criminally responsible for the pop icon's death through medical negligence.

Shafer, a Columbia University professor who wrote the guidelines and warnings that go on every bottle of propofol, said he wants to restore public confidence in the powerful sedative, NBC News reported.

"I am asked every day in the operating room, 'Are you going to give me the drug that killed Michael Jackson?'" Shafer told jurors. "This is a fear that patients do not need to have."

The coroner's office ruled Jackson's death was caused by acute propofol intoxication.

CNN said jury deliberations could begin early next week. Murray faces up to four years in prison if convicted.