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
Pleomorphic adenoma histology is characterized by- 
Select and explain. 
A. Epithelial component, B. Endothelial component, C. Mesodermal component, D. Mixed epithelial and mesenchymal components
D: Mixed epithelial and mesenchymal components
Answer: D: Mixed epithelial and mesenchymal components 
Explanation: Robbins basic pathology 9th edition page no 556 Heading =pleomorphic adenoma Pleomorphic adenomas are benign tumors that consists of a mixture of epithelial and myoepithelial cells, so they exibit both epithelial and mesenchymal diffrentiation