SEATTLE (AP) — Vice President Joe Biden toured a Seattle research facility on Monday, saying scientists are at a turning point in their efforts to eliminate cancer.

The tour is part of the White House's $1 billion proposal for a new initiative to cure cancer. Since the president's announcement during his State of the Union address in January, Biden has been visiting cancer researchers and advocates. The vice president's son, Beau, died of brain cancer last year at the age of 46.

Biden toured the Fred Hutchinson Cancer Research Center, which is spearheading immunotherapy, a treatment that attempts to use a patient's own immune system to fight cancerous cells.

Biden says he's encouraged by improved cooperation among the cancer research community.

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