APOB and atherosclerosis: The aim of the study was to evaluate the parameters of lipid metabolism, i.e. triglycerides (TG), total cholesterol (TC) and its fractions: HDL, LDL and VLDL cholesterol, apolipoprotein A1 and B (Apo A1 and Apo B), lipoprotein(a) (Lp(a)), homocysteine, soluble adhesion molecules (sICAM-1, sVCAM-1 and sE-selectin) in the blood serum and the thickness of common carotid artery wall (IMT) in children from families in which early symptoms of atherosclerosis.