obsolete extracellular matrix organization in marginal zone involved in cerebral cortex radial glia guided migration https://github.com/geneontology/go-ontology/issues/31254 true This term was obsoleted because it is a pre-composed term that should be captured as a GO-CAM model. organization of extracellular matrix in the marginal zone involved in cerebral cortex glial-mediated radial migration GO:0021820 OBSOLETE. The process that leads to the deposition of extracellular matrix signals in the marginal zone of the developing cerebral cortex. This extracellular matrix controls the movement of migrating cells. In mammals, the matrix is modified by Cajal-Retzius cells. extracellular matrix organisation in marginal zone involved in cerebral cortex radial glia guided migration biological_process