Which of the following statements concerning Hassall corpuscles is true?
Hassall corpuscles are epithelial reticular cells (derived from endoderm) found only in the medulla of the thymus.
They are located in the thymic coex of young individuals.
They are located in the thymic coex of old individuals.
They are derived from mesoderm.
They are located in the thymic medulla
Cailage,cell junction,lymphoid and integumentary system