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. 1983 Mar;51(3):461–469.

B cell activation by pokeweed mitogen in cultures of normal peripheral blood lymphocytes depleted of T regulator subsets by treatment with OKT4 and OKT8 monoclonal antibodies.

B M Jones
PMCID: PMC1536783  PMID: 6221842

Abstract

OKT4+ (T helper/inducer) and OKT8+ (T cytotoxic/suppressor) subsets were depleted from peripheral blood lymphocytes (PBL) by complement-mediated lysis and residual cells examined for responsiveness to pokeweed mitogen (PWM) using a protein A haemolytic plaque assay for immunoglobulin secreting B cells. It was shown that: (1) three cycles of cell killing were required to totally abolish T helper function; (2) OKT4- PBL did not respond to PWM, but in a co-culture system, an equal number of unfractionated normal PBL could entirely reconstitute responsiveness of the residual B cells; (3) OKT8- PBL gave enhanced numbers of PWM-induced plaque forming cells (PFC); (4) addition of 4 micrograms/ml concanavalin A (con A) to PWM stimulated OKT8- PBL failed to suppress PFC generation, but suppression was induced by 12.5 and 25 micrograms/ml con A and (5) kinetics of PWM-induced PFC development were similar in the presence or absence of OKT8+ cells.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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