Following days of speculation, Illumina Inc. said today it will acquire liquid biopsy startup Grail Inc. for $8 billion in cash and stock, bringing back into the fold a company it spun out in 2016. The deal gives Illumina a major stake in the race the race to develop a less-invasive way to diagnose cancer. Since spinning out, Grail has raised nearly $2 billion from big-name investors with promises of a blood test for early cancer detection and is hoping to introduce its liquid biopsy as a laboratory-developed test (LTD) as early as next year.