Prosecutors wind down case against Jackson doctor

(CBS/AP) LOS ANGELES - Prosecutors plan to wrap up their case against the doctor charged in Michael Jackson's death by calling three experts intended to help jurors make sense of the complex medical evidence they have been presented.

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Prosecutors told a judge overseeing the involuntary manslaughter case against Dr. Conrad Murray that their remaining witnesses will include experts in cardiology, pulmonary and sleep issues. There will also be a leading researcher on the anesthetic propofol, which is blamed in the pop star's death, a transcript shows.

The government's case against Murray may conclude late this week or early next although an exact timetable remains unclear. Murray's defense attorneys are likely to vigorously challenge the experts, especially Dr. Steven Shafer, a researcher and Columbia University professor, who will be called upon to explain propofol and its effects.

Deputy District Attorney David Walgren told a judge he plans to call Shafer as his final witness.

Murray's attorneys are expected to present a defense case that includes their own witness on propofol.

Authorities say Murray gave Jackson a fatal dose of the surgical anesthetic in June 2009. Murray has pleaded not guilty in the case. The Houston-based cardiologist's lawyers say that Jackson gave himself the fatal dose.

The outside experts' testimony comes a day after a medical examiner told jurors Tuesday that it was unreasonable to believe that Jackson gave himself the fatal dose of propofol when Murray left the room for only two minutes.

Dr. Christopher Rogers also testified that it would be inappropriate to use propofol outside a hospital or medical clinic.

Murray's trial is now in its third week.