February 26, 2007: Expert who identified Halbach's DNA on bullet fragment takes the stand

From the FOX6 News Steven Avery archive:

The defense team for Steven Avery had a long weekend to consider how to cross-examine a DNA expert who testified for prosecutors. She identified Teresa Halbach's DNA on a bullet fragment linked to Avery's gun. But FOX6's Peter Linton-Smith tells you, this expert also admits to contaminating the bullet.