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: Pathology
Cell matrix adhesions are mediated by 
Select and explain. 
A. Cadherins, B. Integrins, C. Selectins, D. Calmodulin
B: Integrins
Answer: B: Integrins 
Explanation: Integrins
Have alpha (CD11) and beta (CD18) subunits and play a role in cell-ECM interactions as well as in leucocyte-endothelial cell interaction.