cardiac effects of tcdd ( 2,3,7,8-tetrachlorodibenzo-p-dioxin ) were examined using atrial muscle isolated from young or mature guinea pigs fed ad libitum , from young animals 10 or 20 days after a single ip injection of 1 microgram tcdd/kg body wt , and from control guinea pigs pair-fed to the tcdd-treated animals .
C0018787
cardiac
C0018792
atrial