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  1. No Access

    Article

    A biotechnology strategy for medium- and long-term conservation of cycads

    It has been possible to regenerate a few cycad species in vitro by somatic embryogenesis, either from zygotic embryos (Ceratozamia hildae, C. mexicana, Encephalartos cycadifolius,E. dyerianus, E. natalensis, Zami...

    Richard E. Litz, P. A. Moon, E. M. Benson, J. Stewart… in The Botanical Review (2004)

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    Chapter

    The role of T-cell lymphokines in congenital immunoglobulin deficiency

    It has become increasingly obvious that T-cell derived lymphokines play a vital role in B-cell proliferation and differentiation,. In view of this, we examined whether the defect in humoral immunodeficiencies ...

    M E Brodtmann, E M Benson in Advances in Mucosal Immunology (1990)

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    Chapter

    Human interleukin-5 “switches” human IgA+ B cells to express and secrete IgA

    In the murine and the human system there is evidence that T-cells regulate both isotype switching to IgA (1,2), and post-switch expansion of IgA+ B-cells (2,3). The post-switch activity in the murine system appea...

    J N Bertolini, E M Benson in Advances in Mucosal Immunology (1990)