title: Rapid changes in intracellular free calcium concentration. Detection by metallochromic indicator dyes in squid giant axon.
abstract: The metallochromic indicator dyes, arsenazo III and chlorophosphonazo III, were used in squid giant axons to detect rapidly the very small influxes of calcium that occur as a result of changes of membrane potential.
mesh_terms: D000818:Animals; D001369:Axons / Q000032:analysis* / Q000502:physiology; D002118:Calcium / Q000032:analysis*; D004396:Coloring Agents; D049832:Decapodiformes / Q000502:physiology; D007202:Indicators and Reagents; D008564:Membrane Potentials
chemical_list: D004396:Coloring Agents; D007202:Indicators and Reagents; D002118:Calcium