Article
Deletions in the ligand for CD40 in X-linked immunoglobulin deficiency with normal or elevated IgM (HIGMX-1).
International immunology - 1 Jul 1993
Ramesh N, Fuleihan R, Ramesh V, Lederman S, Yellin M J, Sharma S, Chess L, Rosen F S, Geha R S
Abstract excerpt
Patients with X-linked Ig deficiency with normal or elevated IgM (HIGMX-1) fail to switch from IgM/IgD to other Ig isotypes. Interaction between the B cell antigen CD40 and the CD40 ligand expressed on activated T cells is critical for T cell driven isotype switching. We have reported that T lymphocytes from three unrelated male patients with HIGMX-1 failed to express CD40 ligand on their surface, but the mRNA...
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