Battle of the Propofol experts at Jackson trial

Outside the court, Murray's defenders have gathered 

and protested his innocence since Day 1 of the trial.

The trial of Dr Conrad Murray is moving into the defense phase, with a mountain of powerful evidence and testimony on the table from the prosecution. If the case against Michael Jackson's doctor is to be believed, the physician made egregious mistake after egregious mistake in his care for the pop star.

Charged with involuntary manslaughter (he denies it) the prosecution contends that simply allowing Jackson to be in the same room as a small pharmacy of sedatives, including Propofol, should be enough to convict the doctor.

The showdown between the trial's two key expert witnesses, longtime friends and colleagues, will be fascinating.  Dr Steven Shafer has spelled out in intricate detail how he believes Jackson died and how only Dr Murray could be blamed for the singer's death.  The defense plan to call Dr Paul White, who was once Dr Shafer's teacher, to present a counter argument.