Original article
Quantitative studies in skin testing: V. The whealing reactions of histamine and ragweed pollen extract

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Abstract

  • 1.

    1. Variations in the site response to constant doses of intradermally injected histamine were observed. These differences closely paralleled those seen previously in the site response of ragweed-sensitive subjects to intradermally injected ragweed pollen extract.

  • 2.

    2. It is concluded that the antigen-antibody portion of the wheal mechanism is not implicated in the site differences, but rather it must be inherent in the differences of the skin itself.

  • 3.

    3. Within the range studied, the dose response of histamine approaches linearity on both logarithmic and semi-logarithmic plots.

  • 4.

    4. The variation seen in the histamine dose-response data is sufficient to account for the variation encountered in the ragweed dose-response data.

  • 5.

    5. Within the limits of the techniques employed, there is no evidence that there are other active substances besides histamine mediating the cutaneous whealing reaction induced by a specific antigen.

References (13)

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This study was made possible by the financial assistance of Parke, Davis & Company, Detroit.

1

Present address: Army Medical Service Graduate School, Walter Reed Army Medical Center, Washington 12, D. C.

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