1. Cammermeyer J (1970) The life history of the microglial cell: A light-microscopic study. In: Ehrenpreis S, Solnitzky OC (eds) Neurosciences research, vol 3. Academic Press, New York, pp 44?129
2. Del Rio Hortega P (1932) Microglia. In: Penfield W (ed) Cytology and cellular pathology of the nervous system, vol 2. Hoeber, New York, pp 481?534
3. Fujita S, Kitamura T (1976) Origin of brain macrophages and the nature of the microglia. In: Zimmerman HM (ed) Progress in neuropathology, vol 3. Grune & Stratton, New York, pp 1?50
4. Hager H (1968) Allgemeine morphologische Pathologie des Nervengewebes. In: Handbuch der allgemeinen Pathologie, Bd 2, Die Organe. Springer, Berlin Heidelberg New York, pp 1?385
5. Kitamura T (1975) Hematogenous cells in experimental Japanese encephalitis. Acta Neuropathol (Berl) 32:341?346