[Colorado Doug]

I hate to point this out, but they look very much like ordinary red blood cells

Do a DNA test. Maybe we got Osama with one of those Moabs after all.

[NicknamedBob]

"Do a DNA test."

From the article -- "... dozens of his experiments suggest that the particles may lack DNA yet still reproduce ..."

So, no DNA, no DNA test. I'm inclined to believe they are some kind of crystalline growth, but I will await better analysis.