Labels:text | screenshot | black | black and white OCR: e appear to 5.12 Minor fluctuations in blood pressu ssin have very little effect on plasma vasopr ten per concentration. A fall in blood pressure gnificant cent or more must be attained before a s er cent s plasma rise in vasopressin is achieved. A forty reduction in pressure, however, produc ndred vasopressin levels approximately one h entrations, times greater than the normal basal con