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Effect of bovine colostrum supplementation Fe-iron; IL-6-interleukin 6, lactoferrin, and transferrin concentrations during exercise test performed before (A) and after supplementation (B). Note. Values are presented as mean ± SD; placebo (black dots); colostrum group (white dots); * p < 0.05 ** p < 0.01 *** p < 0.001.
