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Fig. 5
The effect of sustained hypercapnia (10 min) on heart rate in 5 (A, B) and 6 (C, D) dpf adrb1+/+ and adrb1−/− zebrafish larvae. Statistical results are the output of a repeated-measures two-way ANOVA (A, C). In panels B and D, the maximum changes in heart rate were calculated for each individual immediately after the onset of hypercapnia; genotypes were compared using unpaired t-test. ns, p > 0.05; *p < 0.05; **p < 0.01, ***p < 0.001. N = 9–11. Data points show means ± SEM (A, C), bars show means ± SEM and individual points (B, D).
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Full text @ Acta Physiol. (Oxf).