The jury asked for the reading of the forensic expert's descriptions of how she collected hair, nail clippings and fibers. They also asked to hear the portion that described a crack in one of Clarkson's acrylic fingernails.
Defendant Spector's defense lawyers claim the crack shows she pulled the gun's trigger, taking her own life.
Jurors are in their fourth day of deliberation in the murder re-trial of the music producer.
The 69-year-old Spector is charged with second-degree murder in the shooting death of Clarkson at his Alhambra mansion in February 2003.
He claims she shot herself.
His first murder trial in 2007 ended with the jury deadlocked 10-2 in favor of conviction.
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