EN
The concetrations of magnesium in plasma and erythrocytes were studied in 40 children suffering from urinary tract infectionwithout renal insuficiency.The erythrocyte content of total magnesium was significantly increased both at the onset and at the reco-very phase of the disease, whereas its plasma levels lied within normal limits .The influence of infection on cellular membrane permeability as a probable cause of these phenomena is discussed.