PLIN2 and disorder of glycogen metabolism: In most cases, intensively stained perilipin 2-positive foci were also at least partly visible in perilipin 1 stainings, whereas only in a few cases of non-viral liver disease, with PAS and H&E stainings, a faint discoloration was found (Figure 4c), but no PAS-positive glycogenosis as observed in clear cell foci described by Ribback and coauthors [63] was detected.