11，Lind vall O,Kokaia Z. Neurotrophins and brain insults. TINS,1994,17:490
22，Houlgatte R. Secreation of nerve growth factor in culture of glia cell and neuron derived from different region of the mouse brain. J Neurosci Res, 1989,24:143
33，Weskamp G, Otten U. An enzyme-linked immunoassay for nerve growth factor(NGF): a tool for studying regulatory mechanisms involved in NGF production in brain and in peripheral tissues. J Neurochem, 1987,48:1779
44，Cornell-Bell AH. Glutamate induces calcium waves in cultured astrocytes : long range glial signaling. Science, 1990,247: 470
