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Human Lymphocyte Responses Are Enhanced by Culture at 40°C

J. Bruce Smith, Regina P. Knowlton and Shyam S. Agarwal
J Immunol August 1, 1978, 121 (2) 691-694;
J. Bruce Smith
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Regina P. Knowlton
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Shyam S. Agarwal
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Abstract

In vitro responses of human peripheral blood lymphocytes (PBL) were found to be markedly enhanced by culture at 40°C rather than at the conventional temperature of 37°C. We studied proliferative responses of lymphocytes by activation by phytohemagglutinin (PHA) concanavalin A (Con A), pokeweed mitogen (PWM), and allogeneic lymphocytes in mixed lymphocyte culture (MLC) and found enhancement of DNA synthesis at the higher temperature. Cytotoxic T cell responses to allogeneic cells were also enhanced when MLC was done at 40°C. These enhanced immune responses appear to be due in part to increased numbers of participating cells. If in vitro lymphocyte responses correlate with in vivo responses, then fever associated with infection or tumor may be beneficial whereas that associated with autoimmune disorders may have a detrimental effect.

Footnotes

  • ↵1 This work was supported by American Cancer Society Grant CH104, United States Public Health Service Grants CA-06551, RR-05539, CA-06927 from the National Institutes of Health and by an appropriation from the Commonwealth of Pennsylvania.

  • Received March 10, 1978.
  • Accepted May 8, 1978.
  • Copyright © 1978 by The American Association of Immunologists, Inc.

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The Journal of Immunology
Vol. 121, Issue 2
1 Aug 1978
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Human Lymphocyte Responses Are Enhanced by Culture at 40°C
J. Bruce Smith, Regina P. Knowlton, Shyam S. Agarwal
The Journal of Immunology August 1, 1978, 121 (2) 691-694;

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Human Lymphocyte Responses Are Enhanced by Culture at 40°C
J. Bruce Smith, Regina P. Knowlton, Shyam S. Agarwal
The Journal of Immunology August 1, 1978, 121 (2) 691-694;
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