Suppressor T cells in low zone tolerance II. Characterization of suppressor T and amplifier cells by physical and serological methods

Abstract

Abstract Suppressor cells involved in low zone tolerance to bacteriophage fd have been characterized by serological and physical methods. Suppressor T cells are peripheral T 2 cells which are Ly‐1 ‐ , Ly‐2 + and Ia + . They are of high electrophoretic mobility, sediment 5 mm/h at 1 × g in a linear Ficoll 70 gradient, but are not restricted to a distinct band in a discontinuous bovine serum albumin gradient. Adherent phagocytic cells of low electrophoretic mobility can act as amplifier cells with a much shorter half‐life than suppressor T cells.