Expression of smooth muscle myosin heavy chain 1 (SM2) and 2 (SM2), caldesmon and calponin in the aorta of offspring at 12 weeks of age. Representative western blots and analysis of blots optical density. Two-way analysis of variance: PreW, the effect of pre-weaning diet; PostW, the effect of post-weaning diet; PreW × PostW, the effect of interaction between pre- and post-weaning diet; *P < 0.05 LH versus LL and HH versus HL, †P < 0.05 HH versus LH and HL versus LL.