the main ingredients in this new methodology are bonded-phase silica for quantitative angiotensin extraction from biological fluids and antibodies with a high affinity to angiotensin ii to provide for the sensitivity of the radio-immunoassay , high performance liquid chromatography to guarantee the specificity for the angiotensin- ( 1-8 ) octapeptide , and a renin inhibitor in the blood sampling tube to prevent any in vitro angiotensin ii generation .
C0003018
angiotensin
C0003009
angiotensin ii