[The natural body resistance of the inhabitants of the city of Kiev subsequent to the accident at the Chernobyl Atomic Electric Power Station].

A study carried out among residents of the city of Kiev indicates that combined chronic radiation after the Chernobyl accident in small doses resulted in a reduction of the natural killer activity level, decrease of the number of leucocytes, lymphocytes and in their qualitative disorders. With time after the Chernobyl accident there occurred a deterioration of the above values.