First published online June 13, 2008
Journal of Experimental Biology 211, 2155-2161 (2008)
Published by The Company of Biologists 2008
doi: 10.1242/jeb.017178
Cell-mediated immune activation rapidly decreases plasma carotenoids but does not affect oxidative stress in red-legged partridges (Alectoris rufa)
Lorenzo Perez-Rodriguez1,2,*,
François Mougeot1,2,
Carlos Alonso-Alvarez1,
Julio Blas3,
Javier Viñuela1 and
Gary R. Bortolotti4
1 Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC,
UCLM, JCCM), Ciudad Real, Spain
2 School of Biological Sciences, University of Aberdeen, Aberdeen, UK
3 Estación Biológica de Doñana (CSIC), Seville, Spain
4 Department of Biology, University of Saskatchewan, Saskatoon, Canada

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Fig. 1. Relationship between cell-mediated immune response (CMI; wing web swelling;
in mm) and (A) plasma carotenoids (µg ml–1), (B) eye ring
pigmentation (%) and (C) eye ring redness.
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Fig. 2. Change (% of pre-injection values) in circulating carotenoids, plasma TAS
(total antioxidant status) and red-blood cell TBARS (thiobarbituric acid
reactive substances; a measure of oxidative damage) 24 h after PHA
(phytohaemagglutinin; filled columns) or PBS (control; open columns)
injection. Values are means ± s.e.m. Numbers above or below bars
indicate sample size.
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© The Company of Biologists Ltd 2008