This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cellular Pathology, Subject name: Pathology
Cell to cell permeability occurs through 
Select and explain. 
A. Occludin, B. Zona adherens, C. Connexins, D. Zonulin
C: Connexins
Answer: C: Connexins 
Explanation: Ans. (c) Connexins(Ref: Robbins 9th/ pg 11)*Communicating junctions (Gap junctions): mediate the passage of chemical or electrical signals from one cell to another.*Consists of pores called connexions and formed by hexamers of transmembrane proteins called connexins