Fibrillary astrocytes proliferate in response to brain injury. A study combining immunoperoxidase technique for glial fibrillary acidic protein and radioautography of tritiated thymidine
To determine whether fibrillary astrocytes proliferate in response to brain injury, cells identified as fibrillary astrocytes using immunoperoxidase technique for glial fibrillary acidic protein (GFAP) were examined for uptake of radiolabeled thymidine by autoradiography. In injured mouse brain, autoradiographic label was present over nuclei of immunoreactive fibrillary astrocytes in the lesion site 1 hr following injection of radiolabeled thymidine. The data suggest that fibrillary astrocytes which are sufficiently differentiated to accumulate GFAP retain the capacity to proliferate in response to injury. © 1979.
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