peripheral blood lymphocytes ( pbl ) from 16 patients with systemic lupus erythematosus ( sle ) and 15 healthy control subjects were cultured and immunoglobulin ( ig ) production in vitro was measured by immunofluorescent staining for intracytoplasmic ig , a reverse haemolytic plaque assay to quantify cells secreting ig and a solid-phase radioimmunoassay for ig secreted into culture supernatants .
C0007634
cells
C1327616
secreted