Summary
Abstract Although the importance of synaptic Zn2+, as an emerging neuromodulator throughout the brain, has been widely appreciated, the dynamics of synaptic Zn2+ release in response to naturally occurring stimuli remains largely elusive. Genetically encoded Zn2+ indicators (GEZIs) derived from fluorescent proteins are popular tools for imaging Zn2+ in the cytosol and intracellular organelles. However, fluorescence imaging of Zn2+ secretion in the brain in live animals has not yet been achieved due to the limitations of current GEZIs (e.g., insufficient extracellular membrane localization, mism
