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Fig. 3. The effect of temperature and stimulus change on (A) the peak current
density of L-type Ca2+ channel current (ICa) and (B) the
charge density of ICa in trout atrial myocytes. Dissimilar letters
indicate significant effects of temperature within each stimulus treatment
(analysis of variance, StudentNewmanKeuls test). *
indicates a significant decrease in ICa during AP stimulation at
all temperatures and with each successive stimulus protocol at 21°C.
indicates greater ICa charge density at 7°C
during AP stimulation compared with SQ stimulation. Values are means ±
S.E.M.; N=7 for 7°C and 21°C, and N=8 for
14°C.