This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
Mallory bodies are derived from 
Select and explain. 
A. Cytokeratin, B. Desmin, C. Laminin, D. Vementin
A: Cytokeratin
Answer: A: Cytokeratin 
Explanation: Mallory bodies Large, poorly defined accumulations of eosinophilic material in the cytoplasm of damaged hepatic cells in ceain forms of cirrhosis and marked fatty change especially due to alcoholism. Derived from cytokeratin. Ref: guyton and hall textbook of medical physiology 12 edition page number: 420,421,422