sean lavin is outside the courthouse in orlando. sean, some of this evidence is tedious, but critical to the prosecution's case. talk about this microscopic evidence. >> reporter: that's right. they have very tiny evidence. the fbi analyst was going slide by slide on the microscope comparing these tiny strands of hair. after doing so, she thought she could prove to that jury that this was little caylee in that trunk decomposing. that's what she believes. after she went on the stand, there was another expert from the orange county sheriff's office. he came up and explained how the air samples they took in that car also indicate that there was a decomposing body inside casey anthony's trunk. >> hair samples, that's nothing new. air samples is not something you hear that much about. casey anthony's attorney, jose baez, tried to keep all this out of the trial. >> reporter: he did. it's only been used maybe once or twice, if ever, before. it's very new. jose baez tried to stop it. but the judge made it come in any way, he decided it was r

sean lavin, thank you so much.te your insights on that. >>> and earlier today i asked our legal guys richard herman and avery friedman about the graphic nature of this week's testimony of anthony's trial and we talked about the impact it had on the jury. listen to our discussion. >> this is the most dramatic part of the trial, deb. the kre senn doe that the prosecution is building to achieve the obligation of proving the case beyond a reasonable doubt. they've done it carefully, methodically. they even done their part. the skull, the idea of testimony, even about drawing the body into the woods where bones were gnawed by animals obviously is having an effect. obviously prejudice versus probative, probative prevails. it's a way of prosecuting the case. >> they spent a lot of time about the garbage that was in the trunk of casey's car. first of all, what kind of mother drives around with garbage in her car? it's not even logical. they find traces of chloroform on it. why do you think they're spending so much time on

sean lavin, thankins so much. >>> the european justice ruled against france. france faces fines for failing to protect which species. was it horses, wolves, ham sters, eagles? i'll have the answer on the other side of the break. coldwell banker. we never stop moving. that's how it is with alzheimer's disease. she needs help from me. and her medication. the exelon patch -- it releases medication continuously for twenty-four hours. she uses one exelon patch daily for the treatment of mild to moderate alzheimer's symptoms. [ female announcer ] it cannot change the course of the disease. hospitalization and rarely death have been reported in patients who wore more than one patch at a time. the most common side effects of exelon patch are nausea, vomiting, and diarrhea. the likelihood and severity of these side effects may increase as the dose increases. patients may experience loss of appetite or weight. patients who weigh less than 110 pounds may experience more side effects. people at risk for stomach ulcers who take certain other medicines should talk to their

sean lavin is outside the courthouse in orlando.re grasping that they're having court on saturday mornings. one of the reasons is that the judge wants to get this see questions centered jury back home as soon as possible. get us up to speed on who was on the stand this morning. >> reporter: that's right. they brought the jury in from pinellas county, about an hour and a half away. they want this over with. this morning casey anthony came into court about 9:00 a.m., then we had the fbi expert, karen lowe come in. she was talking about the hair found in casey anthony's trunk. she testified this hair had a special parking on it consistent with decomposition. because of that she believes that hair represents caylee's decomposing body. take a listen to what she said in court earlier today. >> the hair was microscopically dissimilar as to the sample identified as coming from casey. the head hairs in q-12 exhibited similarities to a hair found in a hair brush which was identified as belonging to caylee anthony. >> reporter: now, the lead a