Muiswinkel, W.B. van

b cells t cells response spleen serum number antigen experiment spleen cells development t cell helper population antibody thymu marrow mouse helper cell activity thymectomized bone marrow transplantation t cell population b-cell immunoglobulin transplantation period activity van muiswinkel study adult thymectomized factor helper cells effect recipient assay result animal thymic iga response lymphocytes interaction thymocyte immunol humoral bone marrow-reconstituted mice culture b-cell population differentiation publication table adult thymic hormones muiswinkel b cell clones production plaque presence treatment influence appendix system van soest miller mouse spleen cells antibody production centre reconstitution immunology plasma rotterdam b cell population observation macrophage bone marrow cells plasma cells stage press thymectomized mice soest level serum treatment