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Effects of BH4, l-arginine and vitamin C on blood flow recovery after induction of hindlimb ischemia. LDPI data, expressed as the ratio of blood flow from the ischemic to non-ischemic hindlimbs, was determined before, immediately after and then serially over the ensuing 6 wks. Group identity is shown in the color key. Data are means ± sd; n = 6. *p < 0.05 for BH4 + l-arginine or BH4 + l-arginine + vitamin C groups versus all other groups.
