Why are adhesion molecules considered a form of cell communication in immune responses?

• A. Adhesion molecules allow immune cells to attach to infected cells & signal immune responses.
• B. Adhesion molecules allow immune cells to attach to endothelial cells & trigger immune cell entry into tissues.
• C. Adhesion molecules act as channels that allow signals to travel between two neighboring cells.
• D. Adhesion molecules are signals sent from immune cells to infected cells to trigger apoptosis.
• E. A and B.
• F. C and D.
• G. All of the above.