Here's what to know about the DNA evidence collected so far in the investigation into Savannah Guthrie's missing mother and what results are pending.

Advanced DNA testing using genealogy databases could take weeks or months to identify Nancy Guthrie's abductor after initial FBI database search failed.

What's the latest?

After 44 years, a jury found James Oliver Unick guilty in the 1982 cold case murder of 13-year-old Sarah Geer, thanks to DNA technology.

Investigators continued following leads after DNA evidence from gloves believed to have been worn by Nancy Guthrie's abductor didn't yield results.

You follow the thread of a case that sat cold for nearly three decades and feel the moment the silence breaks. Investigators used updated DNA methods and persistent detective work to connect evidence from 1994 to a living suspect,

In a new study, published in Cell, researchers describe a newfound mechanism for creating proteins in a giant DNA virus, comparable to a mechanism in eukaryotic cells. The finding challenges the dogma that viruses lack protein synthesis machinery,

Retired homicide detective Jon Buehler discussed the developments on Good Day New York, saying he was not surprised by the initial DNA findings tied to the glove.