This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Cell matrix adhesion are mediated by 
Select and explain. 
A. Cadherins, B. Integrins, C. Selectins, D. Calmodulin
B: Integrins
Answer: B: Integrins 
Explanation: ref, Robbins 8/e p96;9/ep24 The cell adhesion molecules are classified into four main families: Immunoglbulin family CAMs Cadherins Selectins