<prompt> Which among the following is not an adhesion molecule?IntegrinSelectincadherinsTransferrin  <response>: 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 