One-kidney, one clip (1K1C) hypertension is often associated with an expanded plasma volume and (once the arterial clip is removed) with natriuresis. Blood pressure (BP), atrial and plasma concentrations of atrial natriuretic factor (ANF), hematocrit, and renal glomerular ANF receptors were therefore studied in 1K1C rats and in their normotensive uninephrectomized controls before and after uncl...