Conrad Murray Trial Resumes With Prosecution's Final Witness

After two cancelled court dates this week, the Conrad Murray murder trial has resumed.

Dr. Steven Shafer, who is an anesthesiologist and Propofol expert, is the prosecution's final witness. Last Friday, Shafer was the last witness to take the stand and is expected to wrap up his testimony today.

During his testimony, Shafer has explained how he's been working with Propofol for over 20 years.

He also revealed that he was hired by the company that produced the drug two decades ago ... to figure out the correct dosage.

Prosecutors are hoping Shafer will help to prove Dr. Murray was negligent when administering the drug to Michael Jackson.