Reliable computational quantification of liver fibrosis is compromised by inherent staining variation

x1.25 thumbnails created from NDPI format scans using a Hamamatsu NanoZoomer of 20 anonymised PSR stained liver explant sections. Sections were provided after application by the Lothian NRS Human Annotated Bioresource with permission granted under authority from the East of Scotland Research Ethics Service REC 1, reference 15/ES/0094. Folder names are as described in the article (E1 and E2 sections were stained and scanned by the pathology department at NHS Lothian, N1, N2 and rN3 sections were stained and scanned by the pathology department at Nottingham University Hospitals NHS Trust.