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Left ventricular (LV) pressure is not significantly different between wild-type (WT) mice, mice that have approximately one-half the normal level of elastin (Eln+/−), and mice that lack elastin (Eln−/−) at embryonic day (E) 18. Top: representative pressure waveforms; middle: calculated systolic pressures; bottom: average heart rates. Data are means ± SE; n = 7–8 mice/genotype.
