https://phys.org/news/2018-05-demasi-images-science-intense-scrutiny.html

There were 17 allegations about images in Demasi's thesis. The question before the panel was whether the images "had been duplicated and/or manipulated in a manner that deviated from the applicable standards at the relevant time".

All of the impugned images depicted the results of experiments to detect proteins or RNA molecules. The techniques to do this are known as "western blot" and "northern blot", respectively.