1022
While blood pressure and noradrenergic activity , assessed as changes in the plasma levels and urinary excretion of norepinephrine , remained unaffected in the Pl group , a significant drop in the supine systolic and diastolic blood pressures , as well as in the resting venous norepinephrine level and in urinary norepinephrine excretion was found after the first month of dF administration .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None