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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Effect of methanol extraction residue tubercle bacillus fraction treatment in vivo and in vitro on the release and activity of suppressor factor inhibiting the efferent phase of contact sensitivity in mice.

BALB/c mice subjected to injection of dinitrobenzenesulfonate (DNBSO3) and skin painting with dinitrofluorobenzene (DNFB) produce splenic T-suppressor ( Ts) cells that, when transferred to DNFB-sensitized recipients, suppress the efferent (eff) phase of contact sensitivity (CS). Splenocyte populations containing such Ts-eff cells release a specific soluble suppressor factor (SSF) in vitro that similarly suppresses CS in sensitized recipient mice. Treatment with the methanol extraction residue (MER) tubercle bacillus fraction, a known immunomodulating agent, of animals exposed to DNBSO3 and DNFB ("DNBSO3-DNFB" donors) prevented release of SSF by their spleen cells at in vitro incubation. Incubation of DNBSO3-DNFB donor splenocytes with MER in vitro also abolished SSF release, and treatment with MER of test animals prior to DNFB sensitization prevented the suppressive action of subsequently administered SSF. The observations are discussed with regard to the potentiating capacities of MER on cellular immunity and states of resistance.[1]

References

  1. Effect of methanol extraction residue tubercle bacillus fraction treatment in vivo and in vitro on the release and activity of suppressor factor inhibiting the efferent phase of contact sensitivity in mice. Zimber, C., Ben-Efraim, S., Weiss, D.W. Cell. Immunol. (1985) [Pubmed]
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