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Vessel diameter, centerline velocity, and blood flow rate in arterioles of the hamster widow model. Animals were first hemodiluted with 6% Dex70 to 35% Hct and then subsequently to 18% Hct using 4% PEG-Alb (n = 5, 25 arterioles, 40–60 μm diameter) and finally treated with N-nitro-l-arginine methyl ester (l-NAME). Data were normalized relative to baseline. Significance of differences between untreated and l-NAME-treated PEG-Alb hemodilution: *P < 0.001 and **P < 0.05.
