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Fig. 5. Lactate (A) levels, lactate dehydrogenase oxidase (B) and lactate
dehydrogenase reductase (C) activities in hindbrain (Hb), hypothalamus (Hy)
and Brockmann bodies (BB) of rainbow trout sampled 6 h after intraperitoneal
injection (IP treatment) of 5 ml kg–1 of Cortland saline
alone (control, C) or saline containing L-(+)-lactate (L22.5, 22.5
mg kg–1 or L45, 45 mg kg–1), sodium oxamate
(OXA, 22.5 mg kg–1) or D-glucose (GLU, 500 mg
kg–1), or 6 h after intracerebroventricular injection (ICV
treatment) into the third ventricle of 1 µl 100 g–1 body
mass of Cortland saline alone (control, C) or containing D-glucose
(GLU, 400 µg µl–1) or L-(+)-lactate (L400,
400 µg µl–1). Results are shown as percentages of
control values (control=100%, dotted line). Each value is the mean ±
s.e.m. of N=11 (IP treatment) or N=8 (ICV treatment) fish
per group. Different letters indicate significant differences among treated
groups within each tissue (one-way ANOVA, P<0.05).
*Significantly different from control (dotted line) in IP
treatments (P<0.05); 
significantly different
from control (dotted line) in ICV treatments (P<0.05).
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