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Keywords: bill colourClose
Journal: Journal of Experimental Biology
J Exp Biol (2009) 212 (9): 1336–1343.
Published: 01 May 2009
... of the swelling could be partly explained by plasma carotenoids; high initial carotenoid levels were associated with a slower decrease of the swelling. These contradictory effects of carotenoids suggest a complex role in the immune response. Bill colour was positively correlated to initial plasma carotenoid...