Photographic reconstruction of a thymus section stained with hematoxylin/ eosin and observed with the objective of 4x. We can observe externally the thin conjunctive capsule, from which leaves septa towards the interior to divide the organ in numerous lobules. Each lobule shows an external zone with high cell content (cortex) and other internal zone containing fewer cells (medulla). Part of a lobule can be seen at higher magnification in other microphotography (zone framed in red)