This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Birbeck granules are present in - 
Select and explain. 
A. Merkel cell, B. Melanocytes, C. Largenhans cells, D. Keratinocytes
C: Largenhans cells
Answer: C: Largenhans cells 
Explanation: Robbins basic pathology 9th edition page no 449 The proliferating Langerhans cell express MHC class 2antigens, CD1a, and langerin. Langerin is a transmembrane protein found in birbeck granules. granules are subdomains of endosomal recycling compament in human epidermal Langerhans cells, which form where Langerin accumulate.