Progress in instrumentation technology for recording from single channels and small cells, Alan S.Finkel; distinguishing between multiple calcium channel types, Martha C.Nowycky; physiological approaches to the study of glutamate receptors, C.E.Jahr; identifying and characterizing stretch-activated ion channels, Christian Erxleben et al; identification of G-protein-medicated processes, A.C.Dolphin and R.H.Scott; modifications to phosphoinositide signalling, P.Jeffrey Conn and Karen M.Wilson; exogenous Kmases and phosphatases as probes of intracellular modulation, Michael J.Hubbard and Claude B.Klee; the expression of neurotransmitter receptors and ion channels in Xenopus oocytes, John P.Leonard and Terry P.Snutch; molecular approaches to the structure and function of the GABA receptors, F.Anne Stephenson and Michael J.Duggan; "in situ" hybridization with synthetic DNA probes, William Wisden et al.