the characteristics of the inotropic responses to isoproterenol ( iso ) were investigated in isolated hearts from embryonic normotensive ( nt ) and spontaneously hypertensive ( sh ) wistar-kyoto rats at 14 , 16 , 18 and 20 days of gestation and from rats 3 and 10 weeks after birth and in ventricular strips prepared from hearts of newborn and 1-week-old rats .
C0018827
ventricular
C0018787
hearts