1. Peters, A., Palay, S. L. & Webster, H. de F. The Fine Structure of the Nervous System 198–203 (Oxford, Oxford, 1991).
2. Katz, B. The Release of Neural Transmitter Substances (Thomas, Springfield, 1969).
3. Couteaux, R. & Pécot-Dechavassine, M. Vésicules synaptiques et poches au niveau des “zones actives” de la jonction neuromusculaire. Compt. Rend. 271, 2346– 2349 (1970).
4. Heuser, J. E. & Reese, T. S. Structural changes after transmitter release at the frog neuromuscular junction. J. Cell Biol. 88, 564–580 (1981).
5. Palay, S. L. Synapses in the central nervous system. J. Biophys. Biochem. Cytol. 2 (Suppl.), 193–202 ( 1956).