recognize earlier, and that this could have been brought to a halt at an earlier time. >> pelley: juliet jacobsshe entered the clinical trial. walter jacobs and eight others have filed suit. in his answer to the jacobs lawsuit, dr. potti says he was "not aware that false or improper information had been included in the research." duke has apologized for the trials. and even though the patients hoped that they were getting an innovation that could save their lives, duke says no one was really harmed because all of them received the standard of care in chemotherapy. >> walter jacobs: they did not advertise this as a standard of care program. they advertised this as an advanced clinical trial with great results. for what happened to my wife, i have to blame potti and anyone else associated with him who knowingly promoted a false, counterfeit clinical trial exploiting human beings. >> pelley: dr. potti resigned from duke. he faces an investigation into research misconduct. he told us, in an email, that it would be inappropriate for him to comment. he wrote, "my primary concern at all times is and w