No to both questions. Urine does break down, but urine from a dead body (most bodies evacuate the bladder upon death and even for a while afterward) is entirely different in analysis than from a live body. There is no way to mistake that one.
The chloroform was in such a large quantity, they know it was not a matter of "accidental mixing" , which would take exact portions to even do. It is hard enough to mix acetone in a lab and get chloroform, much less an "accidental" mix.
Absolutely correct, as Cindy Anthony already knows, since she asked the same question on NG and also insists that Casey does NOT know Caylee's whereabouts:
http://transcripts.cnn.com/TRANSCRIPTS/0809/02/ng.01.html
...
GRACE: Well, I don`t know if it`s leaking. But Captain Angelo Nieves of Orange County Sheriff`s Office gave an official public statement stating the FBI provided scientific evidence of human decomposition in the trunk of Casey Anthony.
Point blank -- I just read it.
C. ANTHONY: Hair follicle or whatever, none of that has been verified.
GRACE: From the FBI lab?
C. ANTHONY: We -- you know, your forensics specialist himself said none of that`s been verified.
GRACE: No. No, no.
C. ANTHONY: You know, even that hair samples.
GRACE: He did not say -- he said some of the evidence. He would want to verify before he gave his expert opinion. But the FBI crime lab states point blank that there is scientific evidence of human decomposition in Casey`s car trunk.
C. ANTHONY: I would love to know what it is. Are we talking about urine? I mean, I myself put dirty diapers back there from Caylee until we`ve gotten home and throw them away. You know when the dog hit on Caylee`s play house, I asked them is it because she peed in her play house?
And they said possibly because they didn`t find anything buried under her play house.
GRACE: To Lawrence Kobilinsky, our forensic specialist joining us tonight, is there any way that a dirty diaper or a urine soaked diaper could show up as human decomposition in a test?
Could you please clarify what you said earlier? Maybe I misunderstood you.
LAWRENCE KOBILINSKY, FORENSIC SCIENTIST: No, no, Nancy. I think a diaper urine would not be mistaken for decomposition. I believe that the kind of air sampling that was done.
GRACE: I`m not talking about the air sampling.
KOBILINSKY: I`m sorry. The hair?
GRACE: I`m talking about the hair, yes.
KOBILINSKY: Yes. Well, you know, if in fact they found hair with a banding pattern and if they can demonstrate that that comes from Caylee, then, you know, they`ve got some very strong physical, although circumstantial evidence.
GRACE: Whoa, whoa, you`re one step ahead of me, because this report regarding the FBI crime lab does not state that the decomposing body was Caylee. It simply says, point blank, there is scientific evidence of human decomposition in Casey Anthony`s car trunk.
KOBILINSKY: Yes. Nancy, if they did mitochondrial DNA analysis, that`s not -- that doesn`t give you a unique profile.
GRACE: Do you have a reason to doubt the FBI scientific lab?
KOBILINSKY: Oh, I think they`re a fine laboratory. But even they will admit that the mitochondrial profiles are not unique.
GRACE: Nobody said mitochondrial.
KOBILINSKY: Oh well.
GRACE: I`m just asking you if you have a reason to doubt their veracity.
KOBILINSKY: I don`t know.
GRACE: OK.
KOBILINSKY: I have no reason to believe they would lie, of course not.
...
GRACE: Well, I`ll tell you why. I`ll tell you why. And this is just my lay person`s and trial lawyer`s opinion. And that is, it`s been very clear -- and you`re right. You stated a liar does not a murderer make.
But when you are lying about the whereabouts of your little girl who is missing, that has made the public doubt anything your daughter is saying.
C. ANTHONY:
And, again, people are speculating that she`s lying about her whereabouts. Casey states and she`s maintained from day one without flinching that she does not know where Caylee is at. In fact, one of our tips matches the descriptions of the people that took Caylee.
...
