Compound exocytosis in voltage-clamped mouse pancreatic beta-cells revealed by carbon fibre amperometry.
Capacitance measurements of exocytosis were combined with carbon fibre amperometry for time-resolved measurements of the properties of secretion in single, insulin-secreting, mouse pancreatic beta-cells pre-loaded with the amine serotonin (5-HT). Glucose-induced electrical activity was associated with the appearance of brief and transient amperometric currents reflecting the serotonin co-released with insulin. The integrated amperometric responses resulting from voltage-clamp depolarisations ...Expand abstract
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