developmental changes in the substrates for cholera toxin ( ctx ) - and pertussis toxin ( ptx ) -catalyzed adp-ribosylation in cardiac ( ventricular ) cell membranes were studied in fetal ( 16- to 20-day ) , neonatal ( 0- to 20-day ) and adult ( 2- to 3-month ) rats .
C0018787
cardiac
C0018827
ventricular