Correlation of oxidative status markers and peripheral blood leukocyte subpopulations or CD11a expression. Levels of lipid peroxidation negatively correlated to CD11a expression monocytes in Control group (A), while in the n-3 PUFA group SOD activity negatively and positively correlated to frequencies of peripheral blood granulocytes (B) and monocytes (C), respectively. Correlation coefficient (r) was calculated using Pearson product-moment correlation. p < 0.05 was considered significant. Control group—young healthy volunteers subjected to 14-day diet with regular hen eggs; n-3PUFA group—young healthy volunteers subjected to 14-day diet with n-3 PUFA-enriched hen eggs. PUFA—Polyunsaturated Fatty Acids, CD11a—Cluster of Differentiation 11a, integral part of integrin Lymphocyte Function-Associated Antigen 1 (LFA-1), TBARS—Thiobarbituric Acid Reactive Substances, MDA—Malondialdehyde, SOD—Superoxide Dismutase.