By Jen Heger

Breaking Celebrity News Legal Editor

Dr. Conrad Murray's defense team commissioned a study on Beagle dogs to determine how much Propofol would have to be ingested to cause Michael Jackson's death, Breaking Celebrity News is exclusively reporting.

At Murray's preliminary hearing earlier this year, his lawyers asserted that the King of Pop swallowed Propofol, and this is what caused his death.

However, in a dramatic turnaround, attorney Michael Flanagan told Los Angeles Judge Michael Pastor on Wednesday outside the presence of the jury, that they wouldn't be pursuing the theory that Jackson had ingested Propofol.

"We are not going to assert