What is meant by "opposing plasma membrane" with respect to cell adhesion molecules?
Opposing means facing each other, so the two outer surfaces can interact. Like two opposing armies.
I found an article:
&quot;Pharmacology of cell adhesion molecules of the nervous system&quot;
at
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2644493/
doi: 10.2174/157015907782793658
&quot;...CAM-induced intracellular signalling is triggered via homophilic (CAM-CAM) and heterophilic (CAM - other counter-receptors) interactions...&quot;