Fig. 2. The summary of the changes in mean arterial pressure (A ), mean aortic blood flow (B ), pulmonary arterial pressure (C ), and left atrial pressure (D ) after an injection of the ovalbumin antigen. Square, Nonsensitized control group (n = 7); circle, Sensitized control group (n = 7); triangle, Propranolol group (n = 7); pentagon, ICI 118,551 group (n = 7); inverted triangle, Atenolol group (n = 7); diamond, Adrenalectomy group (n = 7). Values are means ± SEM; # P < 0.001, versus the Sensitized control group; Closed symbols, P < 0.002, versus the baseline. The numbers in the parentheses indicate the sample numbers of the animals.