Medulla of the canine thymus with Hassall’s corpuscles
![](https://sites.tufts.edu/vetimages/files/2021/07/Medulla_of_the_canine_thymus_with_Hassall_s_corpuscles-20416.jpg)
System: Lymphoid, Organ: Thymus, Tissue: Medulla, Species: Dog. Comments: The eosinophilic Hassall’s corpuscles are characteristic features of the thymus. The medulla is less compact than the cortex and thus stains lighter.