“…This staining has been exploited to characterize morphologically astrocytes (Bjorklund et al, 1985;Hajos and Kalman, in press;Kalman and Hajos, in press), to decide upon the astrocytic nature of some ambiguous cell types Bignami, 1984;de Vitry et al, 1981;Ikeda et al, 1980;Jesse and Mirsky, 1983;Suess and Pilska, 19811, to describe CNS areas of regular glial organization , to investigate the role of astroglia in brain development (Choi and Lapham, 1978;Woodhams et al, 1981), to demonstrate astroglial growth around neural tissue grafts (Azmitia and Whitaker, 1983;Bjorklund and Dahl, 1982;Bjorklund et al, 1984), and it proved to be of diagnostic value in pathological states accompanied by reactive gliosis (Bignami and Dahl, 1976;Bignami et al, 1980;Goebel et al, 1987;Vacca and Nelson, 1981;Vacca-Galloway, 1986). …”