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Mayo Clinic in Arizona has begun a clinical trial to develop blood tests for early-stage breast cancer.
Mayo campuses in Minnesota, Florida and Wisconsin will join Sutter Health sites in California to enroll upwards of 120,000 women who will give blood samples when they get their mammograms.
Mayo and Sutter are working with Menlo Park, California-based Grail Inc. to test Grail's blood tests.
Blood tests to detect breast cancer early are nothing new in Arizona, where Will Gartner developed a blood…