This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Which cells are not present in cerebral cortex? 
Select and explain. 
A. Purkinje, B. Stellate, C. Cajal, D. Pyramidal
A: Purkinje
Answer: A: Purkinje 
Explanation: None