Figure 4.

LBW decreased the total length of capillaries in the left ventricle. Representative light micrographs of a negative control (A) and capillary stained with anti-actin (α-smooth muscle antibody) left ventricle section (B) in LBW lambs (magnification: ×400). There was a lower total length of capillaries (mm) in LBW compared to ABW lambs (C). There was also a direct correlation between total length of capillaries (mm) and AT₁R protein (D). Sample size for each group is indicated in the bar. Open triangles, male ABW (average birth weight) lambs; open circles, female ABW lambs; closed triangles, male LBW (low birth weight) lambs; closed circles, female LBW lambs. *Significantly different from ABW lambs (P < 0.05).