Mobi Health News (Boston, Jan. 2) -- MC10 raised $20 million from undisclosed investors, according to an SEC filing. The company has previously raised $40 million in first-, second-, and third-round funding, bringing its total funding to $60 million. This latest round is the company’s largest single round to date. John Rogers of the University of Illinois, MC10′s cofounder, published a paper in Nature last fall proving that flexible sensors like the ones MC10 is developing could detect a range of things from blood flow to cognitive function.