Anatomy Which of the following statements concerning Hassall corpuscles is true? A They are located in the thymic coex of young individuals. B They are located in the thymic coex of old individuals. C They are derived from mesoderm. D They are located in the thymic medulla 💡 Explanation Which of the following statements concerning Hassall corpuscles is true? ✓ Correct Answer: D. They are located in the thymic medulla