The in vivo development of plasma cells

Abstract
A patient with the clinical diagnosis of meningoencephalitis was studied. The in vivo development of plasma cells in the CNS was demonstrated. All the stages of in vitro mitogen-induced lymphocyte transformation previously described by light microscopy and EM were recapitulated in this analysis of CSF. This apparently represents a local humoral immune reaction in the CNS and provides morphologic support for the concept that the .gamma.-globulin in CSF is produced locally in part, in addition to its origin from the plasma proteins.

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