The Serra murder had left behind a trail of blood evidence.

Where was any blood evidence, if any existed, from the murderer?

Actually, I'm just trying to preserve the blood evidence.

The blood evidence alone, she said, was enough to convict the defendant.

The blood evidence is the biggest thorn in my side; that causes me the greatest problems.

The blood evidence also appeared as a trail along the garage's levels five, six, seven, and eight.

Now, according to the reports, it was only when the blood evidence came back that Wood confessed, right?

"So we don't have any blood evidence," I said.

From the start, both sides saw the blood evidence as crucial.

She also argued that the blood evidence alone was enough to convict the defendant.