1. Angiotensin II receptors from rat adrenal gland and myometrium were studied during variation of sodium intake.

2. In both target-tissues low Na+ diet increased the number of receptors whereas a high Na+ diet did not modify the adrenocortical receptors but increased the number of uterine receptors.

3. Deoxycorticosterone and one kidney Goldblatt hypertension were associated with a decrease in the number of adrenal receptors.

4. Alterations of angiotensin II receptors alone cannot explain satisfactorily the variations of sensitivity of target-cells to angiotensin II during sodium balance changes.

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