Fig. 1

Primary 3D hepatic spheroid from chicken origin, randomly selected from control, untreated cells. The section was stained with hematoxylin and eosin (H&E) staining, bar: 20 µm. Well-preserved hepatocytes with intact morphology are present in high abundance, loosely connected to each other and to other NP cells with smaller nuclei. No significant degenerative changes are visible.