This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Which among the following is not an adhesion molecule? \nSelect and explain. \nA. Integrin, B. Selectin, C. cadherins, D. Transferrin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The cell adhesion molecules (CAMs) are classified into four main families: Immunoglobulin family CAMs Cadherins Integrins selectins Integrins are the most impoant molecules promoting cell-cell or cell-matrix interactions by interacting with vascular cell adhesion molecule (VCAM) or intercellular adhesion molecule (ICAM). The most impoant molecule responsible for diapedesis is called PECAM-1 (platelet endothelial cell adhesion molecule) transferrins are iron binding plasma protein ref robbins pathology 9th ed page 24', 'role': 'assistant'}]