1. Efferent arteriole tubuloglomerular feedback in the renal nephron
Yilin Ren, Jeffrey L. Garvin, Oscar A. Carretero 
Kidney International 
Volume 59, Issue 1, Pages (January 2001)
DOI: /j x
Copyright © 2001 International Society of Nephrology Terms and Conditions

2. Figure 1
Orthograde perfusion of the efferent arteriole (Ef-Art), showing the effect of varying NaCl concentration at the macula densa on efferent arteriole diameter with and without preconstriction. In the absence of preconstriction (○), changing the NaCl concentration had no effect on diameter; however, when efferent arterioles were preconstricted by adding 1 μmol/L norepinephrine (NE; •) to the bath, increasing the NaCl concentration at the macula densa caused the efferent arterioles to dilate (*P < vs. 17 Na/2 Cl with NE; N = 8).
Kidney International  , DOI: ( /j x)
Copyright © 2001 International Society of Nephrology Terms and Conditions

3. Figure 2
(A) Retrograde perfusion of the efferent arteriole (Ef-Art), showing the effect of varying NaCl concentration at the macula densa on efferent arteriole diameter with and without preconstriction. In the absence of preconstriction (○), changing the NaCl concentration had no effect on diameter; however, when efferent arterioles were preconstricted by adding 1 μmol/L NE (•) to the bath, increasing the NaCl concentration at the macula densa caused the efferent arteriole to dilate (*P < vs. 17 Na/2 Cl with NE; N = 8). (B) Time controls of efferent arterioles preconstricted with NE (N = 5). The arteriole constricted further when NaCl at the level of the macula densa was not increased, and this change in diameter was statistically significant.
Kidney International  , DOI: ( /j x)
Copyright © 2001 International Society of Nephrology Terms and Conditions

4. Figure 3
Retrograde perfusion of the efferent arteriole (Ef-Art), showing the effect of varying NaCl concentration at the macula densa on efferent arteriole diameter in controls (○; N = 8) and treated with an adenosine A1/A2 receptor antagonist (PSPX; ▪; N = 11). *P < vs. control.
Kidney International  , DOI: ( /j x)
Copyright © 2001 International Society of Nephrology Terms and Conditions

5. Figure 4
Retrograde perfusion of the efferent arteriole (Ef-Art), showing the effect of varying NaCl concentration at the macula densa on efferent arteriole diameter in controls (○; N = 8) and treated with an adenosine A2 receptor antagonist (DMPX; ▪; N = 6). *P < vs. control.
Kidney International  , DOI: ( /j x)
Copyright © 2001 International Society of Nephrology Terms and Conditions

6. Figure 5
Retrograde perfusion of the efferent arteriole (Ef-Art), showing the effect of varying NaCl concentration at the macula densa on efferent arteriole diameter in controls (○; N = 8) and treated with an adenosine A1 receptor antagonist (FK838; N = 8). *P < vs. 17 Na/2 Cl with NE.
Kidney International  , DOI: ( /j x)
Copyright © 2001 International Society of Nephrology Terms and Conditions