Federal regulators seek to ban Theranos Inc. founder Elizabeth Holmes from the blood-testing industry for at least two years and revoke her company's license after the privately-held firm failed to fix allegedly major flaws with its laboratory processes. Over the last six months, the California-based startup has faced questions over the accuracy of its propietary blood-testing device, named Edison, which emphasizes speedy results, user-friendliness, and the use of much less blood than the normal vile-based testing.