Advances in 3-D printing were on display at last week's Inside 3D Printing Conference in New York City. Among the attendees were Nin Desai, the CEO of NIN Ventures, which is betting on 3-D printing in the medical space, especially tissue engineering. "The biggest 5 sectors in the medical space are bracing, hip and knee replacements, hearing aids [and] dental and tissue engineering," she said. "The most underrated sector currently is tissue engineering. It's the newest." More