Figure 6: The potency of the antibody produced by the Ang II vaccine on cardiac dysfunction after MI.

(a) The protocol to evaluate the potency of immunized serum administration on cardiac dysfunction induced by MI. (b) The serum anti-Ang II antibody titer. MI + control serum, n = 7; MI + immunized serum, n = 7; MI + immunized serum + Ang II, n = 7. *p < 0.05 by the Tukey–Kramer post hoc test. (c) Representative M-mode echocardiograms on day 35. A quantitative analysis of (d) the left ventricular ejection fraction and (e) the end-systolic left ventricular diameter. MI + control serum, n = 7; MI + immunized serum, n = 7; MI + immunized serum + Ang II, n = 7. *p < 0.05 by the Tukey–Kramer post hoc test. (f) The correlation between the left ventricular ejection fraction and the serum anti-Ang II antibody titer in the MI + immunized serum and MI + immunized serum + Ang II groups.