I always thought that they found some sort of trace molecular substance / DNA and couldn't even give a categorical report on what it was - ie saliva blood, skin etc let alone whose it was
The way the discussions go on sometimes about blood is reminiscent of the " blood Splatter " photo that every one got excited about that looked like some sort of gory murder scene from a horror flic with blood dripping between floorboards !!
This was a holiday rental that the dogs visited weeks after the event - even to the extent that other residents had stayed there.
I mean if Maddy had been violently killed that had resulted in this type of blood splatter the case would have been fairly simple
Of course talk of blood spatters is ridiculous, theres nothing to say all those wall markings were specks of blood, in fact I remember reading smething in the files which said it wasnt, but was ages ago and cant find it now
The FSS did find DNA in what was collected, behnd the sofa under the tiles and the small number of components of Madeleines DNA matched that particular samples components, the sample was too meagre for FSS to be able to identify what it was, but the dog only alerts to blood, or anything mixed with it
An incomplete DNA result was obtained from cellular material on the swab (286A/2007 CRL 3a). The swab contained very little information and showed low level indications of DNA from more than one person. However, all of the confirmed DNA components within this result match the corresponding components in the DNA profile of Madeline McCann. LCN DNA profiling is highly sensitive; it is not possible attribute this DNA profile to a particular body fluid.
Still, it doesnt prove anythng, but the point is, some people shout it must be this or that but couldnt possibly be Madeleines.....no way, in the same way the cadaver dog alerts must mean this or that but no way suggest a possible death of a child in that flat, its a type of denial IMO