Cap formation in a B-lymphocyte cell line is inhibited by pertussis toxin and phorbol ester.

Abstract

We have examined concanavalin A (Con A)-induced cap formation in a B-lymphocyte derived cell line, LAZ-559. Treatment with pertussis toxin (PT) or phorbol-12-myristate-13-acetate (PMA) prior to exposure of the cells to Con A abolished the capping reaction. The possible role of calcium mobilization was tested using cells pre-loaded with the fluorescent dye… (More)

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