It’s pink. And it could save your life. Z-Tech, a Westford, MA company, has developed a device that screens for breast cancer by measuring electrical resistance in tissue. The company, which recently completed international trials on 3,500 women, are touting the machine as a painless, radiation-free, and less costly alternative to mammography for women at high risk for the disease. A paper detailing the findings of the two year trial will be submitted later this year for peer review.

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