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ACTH concentrations obtained during petrosal sinus sampling.
A: ACTH in petrosal sinus with highest value before administration of CRH;
B: ACTH in petrosal sinus with lowest value before CRH;
C: ACTH in peripheral vein with higher value before CRH;
D: ACTH in petrosal sinus with higher value 3 minutes after CRH;
E: ACTH in petrosal sinus with lower value 3 minutes after CRH;
F: ACTH in peripheral vein 3 minutes after CRH.
