Source:http://linkedlifedata.com/resource/umls/id/C3269052
GO: A process that results in the assembly, arrangement of constituent parts, or disassembly of a postsynaptic density, a region that lies adjacent to the cytoplasmic face of the postsynaptic membrane at excitatory synapse. [GOC:BHF, GOC:sjp, PMID:21525273]