Grouped pressure/volume relations of a typical dose–response study. A dose
dependent parallel up-ward shift, indicating increase in venous volume and decrease in venous tone
following intra-arterial ANP administration, is shown. ♦, Saline 1; squf;, saline 2;
▴, ANP 0.05 µg min−1; ×, 0.1 µg
min−1; ✶, 0.5 µg min−1; • 1.10 µg
min−1; + 2.75 µg min−1; ○, 5.50 µg
min−1.