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    Mass. Movers

    Thermo Fisher to pay $13.6b for Calif. firm

    Life Technologies makes DNA-sequencing tests.
    Life Technologies makes DNA-sequencing tests.

    Thermo Fisher Scientific Inc. said it will buy a California diagnostics firm for $13.6 billion. The deal caps a string of acquisitions over the past five years for Waltham-based Thermo Fisher, a leader in supplying medical instruments and technology to labs. Thermo Fisher would pay $76 a share for Life Technologies and assume its debt. The companies said the deal, which requires regulatory approval from US and foreign governments, is expected to close early next year.