Elizabeth Holmes, the founder and former CEO of Theranos, has taken the stand after the prosecution rested its case in her criminal trial, CNN reports.
The trial began in September, and prosecutors have alleged that she defrauded investors, as the Wall Street Journal reports. Theranos, which was once valued at $9 billion, said it could run a series of clinical blood tests from a small about of blood from a finger prick, but that ran into trouble following a string of stories in the Journal that questioned its ability to conduct those tests. A regulatory inspection further uncovered numerous issues with a Theranos lab and eventually barred Holmes and Ramesh 'Sunny' Balwani, the former president of Theranos, from owning or operating a lab for a period of time. The collapse of the company also sparked criminal indictments for Holmes and Balwani.
As the Journal now reports, the prosecution's case has included weeks of testimony from investors, employees, and scientists as well as evidence that Theranos altered documents to suggest prominent companies had endorsed the technology.
CNN adds that whether Holmes would testify was a main question of the trial, adding that she first took the stand last Friday to give her account. According to CNN, one of the first questions her attorney asked her was whether she believe that Theranos could run all the blood tests, and she said she did.