This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
The process whereby WBC can squeeze through pores in capillary walls is 
Select and explain. 
A. Diffusion, B. Diapedesis, C. Osmosis, D. Pinocytosis
B: Diapedesis
Answer: B: Diapedesis 
Explanation: (B) Diapedesis# Diapedisis is the passage of red or white blood corpuscles through the walls of the vessels that contain them without damage to the vessels.