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Effect of radicicol on basal diameter. Radicicol had no impact on baseline lumen diameter in 2-day-old piglet PRA (n = 9 PRA from 9 piglets) and caused a significantly greater constriction in PRA from the 12-day-old piglets (n = 5 PRA from 5 piglets) compared with the 5- to 7-day-old (n = 12 PRA from 12 piglets) and 2-day-old piglets. *P = 0.01, different from 2-day-old.
