This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
Hassal's corpuscles are seen in 
Select and explain. 
A. Thymus, B. Thyroid, C. Parathyroid, D. Spleen
A: Thymus
Answer: A: Thymus 
Explanation: Corpuscles of hassall present in the medulla of thymus Formed from eosinophilic epithelial reticular cells arranged concentrically INDERBIR SINGH'S TEXTBOOK OF HUMAN HISTOLOGY SEVENT EDITION PAGE NO139