[alexandria]

I had posted the excerpt because of the greasy drag marks made by parts of her body/entrails.

I have a question regaurding the "greasy trail" if this trail was indeed her blood/tissue why would they need to get a DNA sample from her bone marrow?
I mean especially if it is greasy as in sticky? That would indicate they would not even have to rehydrate the blood as they do with blood spots that have dried up.

[cyncooper]

The impression I got was it was a greasy (slimy?) residue. I can't imagine it would have been of any use in extracting DNA. Better to use the body that was recovered right there.