Kevin_Lowe,
I agree what you have written about the DNA profile on page 504. From the
citation that Malkmus gave on page 496, here is some text:
Monday, 5 November 2007 -- Ominous words:"It is not excluded that in the next few hours one of the many persons interviewed in recent days might be converted into a suspect." Tuesday, 6 November 2007 -- Three persons arrested as suspects. Meredith's family speaks in Perugia
Wednesday, 7 November 2007 -- Background profiles on the three suspects: AK, RS, PL
Thursday, 8 November 2007 -- The suspects are questioned by Matteini. Their lawyers are on TV
Friday, 9 November 2007 -- Matteini publishes her initial report regarding discovery of crime, initial evidence, contradictory alibis, etc.
Saturday, 10 November 2007 -- Dr. Sollecito initiates his TV career, criticising Amanda
Sunday, 11 November 2007 -- Meredith's body returns to England
Monday, 12 November 2007 -- Different, interesting news on all channels
Tuesday, 13 November 2007 -- The Knox, Sollecito and Lumumba families visit Capanne prison. Some make statements to the press
Wednesday, 14 November 2007 -- Forensic police inspect Patrick's pub and they return to Raffaele's flat
Thursday, 15 November 2007 -- Bleached knife found at Raffaele's flat has Amanda's and victim's DNA
highlighting added
Note that bleach is mentioned fairly early on with respect to the knife. I think it is nonsensical to imagine that DNA would withstand bleach, especially if a little bit of bleach were left behind. However, people who say that it was Meredith’s tissue from the murder are making a claim that cleaning the knife will remove blood more easily than muscle or skin cells. I know of no reason to accept this idea. It is magic cleaning fluid, as far as I am concerned.
The point that Malkmus brought up is shown by the first highlighting.