The 1994 murder of Springfield, Virginia, artist Robin Warr Lawrence, 37, would go cold for decades — until DNA left on a washcloth in the victim's home led investigators to a surprising suspect and a chilling confession.

Robin Warr Lawrence was 37 years old in 1994 when someone broke into her Virginia home and stabbed her 49 times ... killing her and leaving her 2-year-old daughter alone for two days until a neighbor discovered her body.

Once an antibody latches on to a pathogen, broadly neutralizing antibodies inactivate it (as their name implies). This is typically because these antibodies bind to a site that’s necessary for a protein’s function. For example, broadly neutralizing antibodies to HIV bind to the proteins that help this virus enter immune cells.

At least two traces of DNA have been found in the investigation into the shocking heist at the Louvre Museum in Paris, authorities confirmed Thursday. The DNA samples were taken from a glove and a helmet left behind by the robbers, investigators told ABC News. They have not yet been matched to any suspects.

Owner Katie told Newsweek she thought she was adopting "a Saluki mix," but Faris's DNA test showed a far more varied genetic makeup.

Your pet is your best friend, but how well do you really know them? By giving the gift of Embark’s dog DNA tests or investing in one for your own family, you’ll get to know your right-hand man, your four-legged lady or your paw-some pal on a cellular level.

An international research team led by Hiroki Shibuya at RIKEN Center for Biosystems Dynamics Research (BDR) in Japan has solved a genetic mystery and revealed a previously unknown way that DNA can control what cells do.