[Characteristics of the B lymphocytes participating in the reaction of allogeneic stem cell inactivation].

In this work the B-cells of mouse lymph nodes are characterized. B-cells produce a helper effect on the capacity of the T-lymphocytes of the lymph nodes for inactivating nonsyngeneic stem cells. The study has revealed that the genetic heterogeneity of the B-lymphocytes does not lead to the abolition of their helper activity. B-lymphocytes of "B-mice" have also been shown to be capable of enhancing the inactivating activity of T-cells.