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: Unknown
Not a cell adhesion protein: 
Select and explain. 
A. Anchorin, B. Integrin, C. Selectins, D. Cadherin
A: Anchorin
Answer: A: Anchorin 
Explanation: (Refer: Ganong’s Review of Medical Physiology, 24th edition, pg no: 41-43)
Cell adhesion molecules (CAM)

Prominent parts of intercellular connections.
CAM attached cells to basal lamina and to each other.

Types of CAM