Morphology.

<p>Daily body mass (A), end haemoglobin concentration ([Hb]) (B), and end mass of whole heart (WH), left ventricle (LV) and right ventricle (RV) (C) after normoxia (N, white), short-term hypoxia (H2, light blue) or sustained hypoxia (H14, dark blue). * <i>p</i> ≤ 0.05, *** <i>p</i> ≤ 0.001 for sustained hypoxia vs. normoxia; # <i>p</i> ≤ 0.05 for short-term hypoxia vs. normoxia; ††† <i>p</i> ≤ 0.001 for sustained vs. short-term hypoxia. Data represent mean ± SEM.