[The expression of antigens, detectable with ICO-series monoclonal antibodies, on the surfaces of cells forming granulocyte and macrophage colonies in semiliquid agar].

: The expression of antigens on granulocyte-macrophagal colony-forming cells of patients with nonhematological diseases was studied. Treatment of bone marrow cells with murine monoclonal antibodies ICO-1 and ICO-11 led to statistically significant inhibition of the number of growing colonies. Monoclonal antibodies ICO-02, ICO-10, ICO-GM-1 and ICO-G-2 had no such effect.