Assessing the ability of zebrafish scales to contribute to the short-term homeostatic regulation of [Ca2+] in the extracellular fluid during calcemic challenges

The elasmoid scales of fish represent a significant internal reservoir of calcium ions (Ca2+), but little is known about the contribution of these scales to the short-term regulation of Ca2+ homeostasis in the extracellular fluid (ECF). This gap in our knowledge is partly due to the technical challenges involved in measuring small Ca2+ fluxes around the scales of live fish in real time. Here, we describe a technique for exfoliating, mounting,...