His footprints were literally in blood. There are pictures of them. It's a reddish substance that darkens to rust-brown as the oxidation process in the air completes.
This is different from invisible undated unmatched luminol prints that tested negative for blood with the highly specific TMB test which the lead forensic scientist working for the police and prosecution assures us means "you can be sure it's not blood."
Red herring. Please do not try to claim Raff and Amanda dipped their feet in parsnip juice, or similar paradoxidised (sp_?) vegetable juice to produce said stains on the night
in the shape of their bare feet, whilst "Rudy's must be blood".
ETA: and of course, Amanda & Raff took care not to clean up Rudy's footprints, but seem to have accidentally washed off one side of them, giving a one-sided hopping effect.
----quote:
Negative TMB Test
A final objection to the footprints that were revealed being blood is based on the negative results of TMB tests on the same surface, an event which happens on valid blood Luminol hits about half the time, according to Stefanoni[27]. Tetramethylbenzidine (TMB) is another presumptive test for the presence of blood. The problem with this argument is that TMB is only able to detect blood to a sensitivity of 1 in 10,000 parts.[28] Luminol on the other hand is extremely sensitive and is capable of detecting blood to a sensitivity of 1 in 1,000,000 parts on the low end and 1 in 100,000,000 parts on the high end.[29] That means that luminol is at a minimum 100 times the sensitivity of TMB and can be as high as 10,000 times the sensitivity. Attempting to compare the sensitivity of these two tests it is clear that luminol is by far the more sensitive test. Using a considerably less sensitive test to argue that the positive result of the test with a much greater sensitivity is a false positive is illogical and incorrect. [30]
Conclusion
The luminol traces are very strong evidence of Amanda Knox and Raffaele Sollecito's involvement in the murder of Meredith Kercher. The footprints establish that someone other than Rudy Guede was present and that these individuals had feet that are compatible with Knox and Sollecito. Attempts to explain the evidence by making reference to DNA in dust and to luminol false positives are at best misinformed and most likely intentionally deceptive. The argument that because TMB was used and the result was negative we should exclude the luminol results is wrong. The footprints are made in blood, they belong to Amanda Knox and Raffaele Sollecito, and they establish without a doubt that the couple was involved with the murder.
--------Ends
Source:
http://themurderofmeredithkercher.com/Luminol_Traces#Finding_7_.2F_L9_.2F_Rep._184
Testimony of Bongiorno cross-examining Boemia:
-------quote:
Sollecito Defence - Bongiorno
GB:
You still consider it to be three people because you take into consideration the bathmat print which though you don’t know the length of?
PB:
Yes.
GB:
Not knowing the length, you can rule out that the person who left the print on the bathmat could in reality be one of the persons, maybe the one who left the shoe print on the pillow slip?
PB:
Look, to identify a print it isn’t necessary to have the complete entire print, just as to identify a person it’s not necessary to have all ten fingers like someone was saying for a long time; and to identify a person it’s not necessary that the finger be classifiable or something, I need only a portion of a print for identification, [253] speaking of fingerprints; and the same thing for shoe prints, for foot prints; therefore there’s no difference.
GB:
The person who left the print on the bathmat, do you know if they were male or female?
PB:
Certainly, unless they were a giant, in short.
GB:
Why, of what dimensions is this print?
PB:
It’s of 10 centimetres in width.
GB:
And the length?
PB:
Counsel, how can I tell you the length, I’ve been saying to you that I need only a few elements to identify a person, you’re returning me back again to the question…?
MC:
Pardon me, but these aren’t questions flowing from the President’s question, it seems to me, because if we don’t return to…
GB:
To the number of persons.
GCM:
On the number of persons, only on this, independently of the attribution.
GB:
Independently of the attribution, how can you definitely rule out that that print does not belong to someone else?
[254]
GCM:
That is to someone else who left other bloodstained prints.
GB:
Right.
PB:
Seeing that in any case there were the shoe prints there on the thing, one referable to the right shoe revealed on the pillow slip and one referable to the left shoe, left on almost every surface of the apartment, I presume that in any case that one was wearing shoes and then after the one who left the print on the bathmat wasn’t.
GB:
Therefore there are two of them.
PB:
I presume there are two of them.
GB:
Two.
PB:
And the third is the woman’s shoe print on the pillow slip.
-----------Ends
Source:
http://themurderofmeredithkercher.com/Pietro_Boemia's_Testimony_(English)#Women.27s_Shoeprint