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Calcium sparks are present in trout atrial myocytes.

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posted on 2013-02-20, 15:17 authored by Anna Llach, Cristina E. Molina, Enrique Alvarez-Lacalle, Lluis Tort, Raul Benítez, Leif Hove-Madsen

A The upper panel shows calcium sparks (white arrowheads) recorded in the line-scanning mode. The lower panel shows the fluorescence intensity (F/F0) recorded in a 3 µm wide band delimited by the two red lines. B Comparison of spontaneous calcium sparks (white arrow) and a field stimulated calcium transient (black arrow). The corresponding calcium transients recorded in a 3 µm wide band delimited by the two red lines are shown in the lower panel. C Comparison of the frequency of spontaneous calcium sparks and calcium waves. The parentheses indicate the number of cells where sparks or waves were detected out of a total of 38 myocytes examined.

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