Left ventricle of neonatal mouse at postnatal day 4, imaged in parasternal short axis view, with papillary muscles labeled. … … Parasternal short axis view of mouse neonate …

PW Doppler of mitral blood flow in a postnatal day 9 mouse taken from an apical 4 chamber view, with related cardio measurements.  … … Mitral flow and measurements of a mouse neonate …