Dr. Conrad Murray's manslaughter trial and MJ's death photo

Several key witnesses are set to take the stand today in the Dr. Conrad Murray manslaughter trial -- including the paramedics who first arrived to the scene and believed MJ was already dead when they got there.

The medics also believe Dr. Murray withheld vital information during the rush to save MJ's life.

Dr. Conrad Murray's attorney Ed Chernoff told the jury Michael Jackson caused his own death.