Fig. 1.
A: cross-sectional study of diaphragmatic contribution to breathing (ΔVAB) at rest in 22 dogs with the GRMD mutation (x), 3 dystrophin-expressing carrier dogs (Δ), and 12 normal dogs (o) shows a loss of diaphragm function in GRMD. B: decline in ΔVAB at rest in seven individual dogs with the GRMD mutation measured at two time points.