SLC8A1 and neuroblastoma: There are a variety of functional consequences to promoting such Na+ influx in excitable cells: trains of spontaneous action potentials, volume increase of nodal region of frog myelinated nerve fibres [8], [25], [26], enhancement of neurotransmitter release, volume increase of motor nerve terminals at the frog neuromuscular junction [9], [25], spontaneous activity in neuroblastoma cells [23], activation of the Na+/Ca2+ exchanger in the reversed mode followed by neurotransmitter release from synaptosomes [13], and Ca2+ mobilisation in neuroblastoma cells [12].