Elizabeth Holmes testifies in Theranos . trial

Holmes gained widespread media attention about a decade ago as the rare young female startup founder who dared to take on the challenges of biotech. She claims her technology is capable of running countless tests on mini lab machines with just a few drops of blood. Her signature looks include Steve Jobs-style black turtlenecks, she speaks in a low voice and wows audiences when she talks about the company’s ambitions. She founded the company while an undergraduate student at Stanford University, then dropped out to push the company to raise about $900 million from investors in a high-rise office building in the Valley. Silicon employs hundreds of people.