title: Impregnation of oligodendroglia in nervous tissue kept in formalin for many years.
mesh_terms: D005557:Formaldehyde; D006801:Humans; D009369:Neoplasms; D009417:Nerve Tissue; D009836:Oligodendroglia; D009837:Oligodendroglioma
chemical_list: D005557:Formaldehyde
keywords: TUMORS/oligodendroglioma