it may be postulated that the circulating plasma A-II is not the only source of A-II available to the proximal tubule lumen. In the kidney, angiotensin converting enzyme (ACE) has been shown to be present in glomerular endothelial cells and in the proximal tubule BBM . ... Thus, even in the presence of BBM angiotensinase, the A-II concentration in the luminal fluid of the proximal tubule may reach muchanbsp;...
|Title||:||Tubuloglomerular Feedback System|