A post-doc of a collaborator of a professor of mine was once found to have doctored data. The professor and her collabs only found out when they looked at the i

A post-doc of a collaborator of a professor of mine was once found to have doctored data. The professor and her collabs only found out when they looked at the images and found out that there were sections that seemed to have been copy/pasted. Getting the papers retracted was a gruelling process that (iirc) took over 3 years.