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lüll The dissociation activation model of B cell antigen receptor triggering Yang J; Reth MFEBS Lett 2010[Dec]; 584 (24): 4872-7To detect its cognate antigen, each B lymphocyte contains up to 120000 B cell antigen receptor (BCR) complexes on its cell surface. How these abundant receptors remain silent on resting B cells and how they can be activated by a molecularly diverse set of ligands is poorly understood. The antigen-specific activation of the BCR is currently explained by the cross-linking model (CLM). This model predicts that the many BCR complexes on the surface of a B cell are dispersed signalling-inert monomers and that it is BCR dimerization that initiates signalling from the receptor. The finding that the BCR forms auto-inhibited oligomers on the surface of resting B cells falsifies these predictions of the CLM. We propose the dissociation activation model (DAM), which fits better with the existing body of experimental data.|Animals[MESH]|Humans[MESH]|Lymphocyte Activation[MESH]|Receptors, Antigen, B-Cell/*immunology[MESH] |