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. 2018 May 22;67(4):463–477. doi: 10.1538/expanim.18-0045

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©2018 Japanese Association for Laboratory Animal Science

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License. (CC-BY-NC-ND 4.0: https://creativecommons.org/licenses/by-nc-nd/4.0/)

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Fig. 2. — Ultrasound cardiogram of the pig. a: The apical four chamber view showing blood flowing through the mitral valve and flowing back into the left atrium. Heart: The blue area is the regurgitant beam. b: Continuous-wave Doppler at the level of the mitral valve showing the holosystolic regurgitant flow. c: The anteroposterior diameter and left and right diameter of the left atrium increased significantly in the mitral regurgitation group (4.1 cm and 5.5 cm, respectively). Square: Enlarged left atrium. d: The anteroposterior diameter and left and right diameter of the left atrium in the control group were normal (2.6 cm and 3.3 cm, respectively). Diamond: Normal left atrium.