Straus reaction

Straus re·ac·tion

a diagnostic test for glanders. Male guinea pigs are inoculated intraperitoneally with suspected material; if the glanders organism is present, it will usually set up a necrotizing inflammation in the scrotal sac within a few days and the specific organism can be confirmed bacteriologically.

Straus reaction

An obsolete biological assay in which clinical material—e.g., pus—is obtained from patients or animals with glanders and injected into male guinea pigs; if the causative agent Pseudomonas mallei is present, it induces necrotising scrotal and testicular inflammation.


Isidore, French physician, 1845-1896.
Straus reaction - a diagnostic test for glanders.
Straus sign - in facial paralysis, if an injection of pilocarpine is followed by sweating on the affected side later than on the other, the lesion is peripheral.