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Cooper's defense. >> to kevin cooper's shock and the defense's shock, the testing came back saying that there was kevin's dna on a-41. >> but for hile, the dna results raised a red flag. >> back in 1983, the lab technician, daniel gregonis he testified that he had consumed a-41 during his testing. now gregonis was asked to make sure that a-41 still existed. we have a photograph of the envelope that shows the date that he took it out and when he resealed it. so we know that he had a-41 on his person for 24 hours before he returned it. he'd also had nearby, in the lab, the vial of kevin cooper's...

The defense's shock, the testing came back saying that there was kevin's dna on a-41. >> but for hile, the dna results raised a red flag. >> back in 1983, the lab technician, daniel gregonis he testified that he had consumed a-41 during his testing. now gregonis was asked to make sure that a-41 still existed. we have a photograph of the envelope that shows the date that he took it out and when he resealed it. so we know that he had a-41 on his person for 24 hours before he returned it. he'd also had nearby, in the lab, the vial of kevin cooper's blood that was taken from him when he was arrest...

Kevin's dna on a-41. >> but for hile, the dna results raised a red flag. >> back in 1983, the lab technician, daniel gregonis he testified that he had consumed a-41 during his testing. now gregonis was asked to make sure that a-41 still existed. we have a photograph of the envelope that shows the date that he took it out and when he resealed it. so we know that he had a-41 on his person for 24 hours before he returned it. he'd also had nearby, in the lab, the vial of kevin cooper's blood that was taken from him when he was arrested. >> contrary to gregonis' original testimony, the state now re...

Kevin's dna on a-41. >> but for hiel, the dna results raised a red flag. >> back in 1983, the lab technician, daniel gregonis he testified that he had consumed a-41 in his testing. we have a photograph of the envelope that shows the date that he took it out and when he resealed it. so we know that he had a-41 on his person for 24 hours before he returned it. he'd also had nearby, in the lab, the vial of kevin cooper's blood that was taken from him when he was arrested. >> contrary to gregonis's original testimony, the state now reported there was enough of a-41 for additional dna testing. resu...

George zimmerman murder trial. they have not gotten to the heart of why he's testifying but you heard them give a preview of why he would be on the stand likely from judge ferrer. we will go there but to get thoughts on what happened. former prosecutors, now defense attorneys. let's face it. this is boring. right? this is boring! >> there has been a lot of boring stuff. i can't believe all the networks are covering it. you wake up in the morning, when you do this for a living, who are the witnesses today? oh. it's the lab technician. we can get by that. the prosecution team is like, you want t...