Fig. 2.
Atrial tissue micromechanics. a Unstained bright-field microscope image of a control atrial cryosection with black boxes (50 × 50 μm) demarking measurement areas. b Mean reduced modulus (Er) was influenced by acclimation temperature. Values presented are mean ± S. D. Significance was assessed by one-way ANOVA and is shown between groups by dissimilar letters (P < 0.005). c Frequency distribution of Er, in cold (5 °C; blue) versus control (10 °C; green) (top), and warm (18 °C; red) versus control (bottom). n = 3 animals per group, 3 regions per animal, 400 force curves per region. The frequency histograms are separately overlaid to show the spread of the data and to emphasise the differences between control and cold and between control and warm