Fig. 7. Dilated cardiomyopathy in adult Tbx20lacZ/+ and
Tbx20lacZ/+/Nkx2-5lacZ/+ mice. (A) Expression
of LacZ in adult Tbx20lacZ/+ and
Nkx2-5lacZ/+ hearts. (B) Dilated right ventricle in
Tbx20lacZ/+/Nkx2-5lacZ/+ heart. (C-F)
Transverse sections of a wild-type heart and one
Tbx20lacZ/+/Nkx2-5lacZ/+ heart that showed
right ventricular dilation (haemotoxylin and eosin staining). Arrows indicate
fibrosis. (G) Northern analysis of stress and hypertophy markers in three mice
of each genotype from the echocardiographic cohort. LV, left ventricle; RV,
right ventricle; wt, wild type.