Roozbeh Ghaffari, a postdoctoral associate in the Research Laboratory of Electronics, helped ring the opening bell to the New York Stock Exchange on Friday, June 20, alongside his team members from Diagnostics for All, which won the MIT $100K Entrepreneurship Competition in May. Diagnostics For All is a nonprofit company that has developed a unique process for making simple medical test kits out of paper that require only a single drop of blood to provide a color-coded response indicating the presence of any of several different diseases. Besides Ghaffari, at left in the photo, the other team members are Jon Puz, Hayat Sindi, Gilbert Tang, Carol Waghorne and Krishna Yeshwant. Photo courtesy / NYSE