The litigation over the fraud perpetrated by Theranos Inc. and its executives is still legally relevant, but another Silicon Valley company and its founder have been indicted over misrepresentations to investors over liquid biopsy technologies that were purported to work with just a few drops of blood. A jury recently convicted Mark Schena, the president of Palo Alto-Calif.-based Arrayit Corp., of defrauding investors and causing false claims to be submitted to federal health programs, another example of how investors can be easily misled by hucksters plying the diagnostics trade.