Fabricated data is much harder to catch, but an eagle-eyed scientist might notice irregularities with digital images that may indicate manipulation or data that looks "too good to be true." If ...

Six weeks after Fibrogen acknowledged data manipulation in one of its trials, it's said precious little about how or why it happened.

Top Harvard cancer researchers accused of scientific fraud; 37 studies affected Researchers accused of manipulating data images with copy-and-paste.