Rapid changes in intracellular free calcium concentration. Detection by metallochromic indicator dyes in squid giant axon.
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.
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
D004396:Coloring Agents; D007202:Indicators and Reagents; D002118:Calcium