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Figure 6


Fig. 6. Change in dry relative ventricular masses for compact (lower portion) and spongy (upper) myocardium in cold-acclimated rainbow trout induced by phenylhydrazine hydrochloride injections at weeks 0 and 2 (hatched columns) compared with sham-injected control fish receiving saline (open columns) and untreated control fish (reverse hatched columns), and followed by a recovery period to week 8. Values are means ± s.e.m., N=6. The horizontal lines denote mean values for the pre-treatment (day 0) controls (the dotted lines represent ± s.e.m.). +Significant difference (P<0.05) from the pre-treatment control value at week 0, as detected by ANOVA and Dunnett's test. *Significant difference (P<0.05) between a time-matched PHZ-treated and sham-injected group, as determined by Student's t-test statistic (P<0.05).





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