That area is behind the sofa. Both dogs alerted behind the sofa....... read the report it is clear that the specific tiles lifted were in the areas where Keela alerted.... The forensic scientists use the dog alerts to examine certain areas.... do you honestly believe they decided to lift random tiles in other areas and just happened to find human cellular material that also happened to show "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."
Swab 3a was taken from the corner, not where Keela or Keela alerted behind the sofa. It is marked on the PJ photograph.
https://www.mccannpjfiles.co.uk/PJ/PORTUGUESE-FORENSIC.htm12_VOLUME_XIIa_Page_3225
Processos Vol XII
Pages 3224 - 3225 (in English)
Delivery Guide 286 A - 2007
Delivery Guide of Recovered Evidences at the Crime Scene
In order to carry out the determined by the 4th Brigade of the PJ Criminal Investigation Department, concerning to process number 201/07 Galgs, between 15.00 of August 4th 2007 and 06.30 of August 5th 2007, were recovered the following evidences in the living room of the apartment 5 A. Ocean Club villas, Praia da Luz, Lagos, Portugal, where is possible may had occurred a crime of homicide, by the Crime Scene Investigators Fernando Jose da Silva Viegas and Bruno Jorge Possidonio Mendes Atunes:
1A. Stain on the floor recovered with a dry swab.
1B. Stain on the floor recovered with swab, with distilled water.
2A. Stain on the floor recovered with a dry swab.
2B. Stain on the floor recovered with a swab, with distilled water.
3A. Stain on the floor recovered with a dry swab.
3B. Stain on the floor recovered with a swab, with distilled water..........
If neither dog alerted to that spot, meaning that there was no blood or cadaver odour in that corner, then what bearing would Perlin's DNA data re-analysis of an unidentified body fluid have on an investigation into potential death?