More inconsistencies arise in publications and statements of the litigation-happy professors of the University of Würzburg, Heike and Thorsten Walles. These regenerative medicine scientists turned the entire might of German justice system against my reporting, while their academic employer remains shamefully silent. Their elusive animal experiments with the pig intestine-based tracheal transplants seem to be very real when Heike Walles speaks about them and become non-existent when her husband and research partner Thorsten does. While the University of Würzburg and the federal watchdog Paul-Ehrlich-Institute (PEI) protect the surgeon by asserting that no ethics vote was needed to perform his tracheal transplants on 3 patients, his wife claimed that he actually needed and obtained an ethics approval to do this. Thorsten Walles himself in fact indicated that his last transplant in 2009 might have broken the German Tissue Law from 2007, i.e., if he indeed failed to obtain an ethics vote, while operating under compassionate use. In any case, no German institution was willing to discuss with me the existence or non-existence of these ethics approvals. Despite the simple fact that none of these 3 patients is alive today (one died in fact very soon after operation), it is none of public’s business.
Now, a seemingly duplicated image was spotted in two Walles publications (Linke et al 2007 and Schanz et al 2010). They describe the creation of an “artificial liver”, made from decellurised pig intestine (just like the tracheal transplants), seeded with endothelial and liver cells. These two publications are 3 years apart, the methodology description is also slightly different (e.g., decellurisation process and the speed and kind of perfusion). A minor aspect may be that the Linke et al 2007 paper described the use of pig cellular material, and Schanz et al 2010 employed primary human cells from patient biopsies. Finally, the image seems not just duplicated, but one looks actually brighter and like a zoom-in of the other.