DEVELOPMENT OF ASTROGLIAL CELLS IN THE ENCEPHALON OF GALLOTIA-GALLOTI- A GOLGI TECHNIQUE STUDY

Some variants of the Golgi techniques have been used to study the poss ible origin and developmental sequence of astroglial cells in the liza rd Gallotia galloti. The developmental sequence consists of progressiv e transformations of astroglial cells originating either from radial g lia or from glioblasts. The so-called displaced radial glia, an interm ediate cellular type between radial glia and astrocytes, indicate the radial glia/astrocytes transformation. Apparently, glioblasts also evo lve into astroblasts that, in turn could develop into immature protopl asmic or fibrous astrocytes, precursors of mature protoplasmic and fib rous astrocytes, respectively. The present study confirms our previous ultrastructural and immunohistochemical studies on the same animal. ( C) 1995 Wiley-Liss, Inc.