[Dynamics of changes in halo-forming cells during pathologic processes]

The method of detecting halo-forming cells (HFC) in the peripheral blood is described and the data characterizing the time course of changes in their number are presented. These data indicate that the process of halo formation is not based on the immunological components of plaque formation (complement, antigens or hemolyzing antibodies). HFC have been shown to appear in the peripheral blood somewhat earlier than cells capable of producing antibodies, i.e. plaque-forming cells.