1. Lander, A.D. Molec. Neurobiol. 1, 213–245 (1988).
2. Barde, Y.-A. Trends Neurosci. 11, 343–345 (1988).
3. O'Brien, R.J. & Fischbach, G.D. J. Neurosci. 6, 3284–3289 (1986).
4. Goslin, K., Schreyer, D., Skene, J.H.P. & Banker, G. Nature (in the press).
5. Banker, G.A. & Waxman, A.B. in Intrinsic Determinants of Neuronal Form and Function (eds Lasek, R. & Black, M.B.) 61–82 (Liss, New York, 1988).