The cover shows a section of a mesenteric lymph node from a lymphotoxin β–deficient mouse. IgD− germinal center B cell regions (orange/brown) still form despite absence of the normally extensive FDC-M2+ follicular dendritic cell networks. Discrete FDC-M2+ cells (purple) are still visible, and possibly represent immature follicular dendritic cell precursors. See related article in this issue by Koni and Flavell, pp. 855–864.
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NKp44, A Triggering Receptor Involved in Tumor Cell Lysis by Activated Human Natural Killer Cells, Is a Novel Member of the Immunoglobulin Superfamily
Brief Definitive Report
Activated Human T Cells, B Cells, and Monocytes Produce Brain-derived Neurotrophic Factor In Vitro and in Inflammatory Brain Lesions: A Neuroprotective Role of Inflammation?
Melanoma Cells Present a MAGE-3 Epitope to CD4+ Cytotoxic T Cells in Association with Histocompatibility Leukocyte Antigen DR11