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. Author manuscript; available in PMC: 2009 Sep 16.
Published in final edited form as: Mech Ageing Dev. 2002 Apr 30;123(8):1159–1165. doi: 10.1016/s0047-6374(02)00003-9

Table 1.

Measured variables in young and old male Sprague–Dawley rats

Young (n = 5) Old (n = 6)
Plasma citrulline (μM) 70 ± 8 171 ± 23*
Plasma arginine (μM) 164 ± 20 208 ± 18
Cerebellar arginine (μmol/g) 4.4 ± 0.3 4.4 ± 0.6
Renal cortex arginine (μmol/g) 11.5 ± 2.1 14.8 ± 1.1
*

P<0.05 young vs. old.