Abstract
Summary
On the basis of 217 Frei tests performed in persons suffering from acute Iyniphogranuloma inguinale and healthy medical students, With mouse brain antigen of varying age. we conclude that neither its specificity nor its sensitivity is altered by preservation in the ice-box or at room temperature. for as long as 14 months. In order to exclude false positive reactions in persons hypersensitive to mouse brain emulsions, the use of normal mouse brain emulsions as control is recommended.
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