Figure 2.

Antioxidants in liver of adult barn swallows from Ukraine in relation to levels of radiation (mRh⁻¹). The regressions were significant when radiation level was log-transformed ((a) retinol (μgg⁻¹): F=22.01, d.f.=1,56, r²=0.28, p < 0.0001, slope (s.e.)=−21.47 (4.58); (b) α-tocopherol (μgg⁻¹): F=11.84, d.f.=1,56, r²=0.17, p=0.001, slope (s.e.)=−7.00 (2.04); (c) carotenoids (μgg⁻¹): F=9.51, d.f.=1,56, r²=0.15, p=0.003, slope (s.e.)=−2.46 (0.80), respectively).