Florida Department of Law Enforcement Crime Lab Analyst Anthony Gorgone points to a jacket worn by George Zimmerman on the night Zimmerman shot Trayvon Martin during the George Zimmerman trial in Seminole circuit court, July 3, 2013 in Sanford, Florida.
(CBS) --Slain Florida teen Trayvon Martin's DNA wasn't detected on George Zimmerman's gun, a Florida Department of Law Enforcement DNA analyst testified Wednesday.
PICTURES: George Zimmerman on trial in death of Fla. teen
PICTURES: George Zimmerman crime scene photos
READ: Trayvon Martin Shooting: A timeline of events
Anthony Gorgone also testified that George Zimmerman's DNA wasn't found under the teen's fingernails.
Zimmerman, a former neighborhood watch captain charged in Martin's shooting death, claims he killed the teen in self-defense during an altercation last year in a Sanford, Fla. gated community. Zimmerman said Martin slammed his head into a sidewalk and reached for his gun before he fatally shot the teen. He is charged with second-degree murder.
In court Wednesday, attorneys displayed items of clothing Zimmerman and Martin were wearing the night of the fatal altercation that Gorgone tested for DNA, including Martin's hoodie and Zimmerman's red jacket.
Gorgone said he didn't detect any DNA that wasn't Martin's on the cuffs and sleeves of Martin's hoodie.
VIDEO: Zimmerman trial: Prosecutor opens with profanity
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DNA Analyst: Martin's DNA not on Zimmerman's gun
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