This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cell Membrane and transpo protiens, Subject name: Physiology
[{'content': 'Not a cell adhesion molecule: \nSelect and explain. \nA. Integrin, B. Selectin, C. Cadherin, D. Spectrin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Major cell adhesion molecules (CAMs) Name Examples Cadherins Cell- cell junctions such as adherens junctions and desmosomes. calcium- dependent Integrins Primarily found in cell - matrix junctions. These also function in cell signaling. Immunoglobulin superfamily CAMs NCAMs (nerve-cell adhesion molecules). Responsible for nerve cell growth during nervous system development. Selectins Temporary cell-cell adhesion. Spectrin is a protein that make up the membrane structure of the cell and play a role in maintaining plasma membrane integrity and cytoskeletal structure.', 'role': 'assistant'}]