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Physical Evidence
bullet-test control
Culhane said her DNA appeared in the control, while the bullet sample yielded a single-source profile consistent with Teresa Halbach. She believed her work near the bench introduced the DNA but acknowledged that she could not say precisely how the control became contaminated.
Also known as (1)
- Bullet-test manipulation control
About
Culhane cited her DNA's presence in the control rather than the bullet sample, along with her inability to repeat the extraction, as reasons for requesting a protocol deviation and reporting the bullet result.