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March 9, 1901


JAMA. 1901;XXXVI(10):673. doi:10.1001/jama.1901.02470100065012

A discovery of some importance from a medicolegal point of view is announced from Germany. Uhlenhuth1 has found that by repeatedly injecting rabbits with defibrinated blood from various animals, a serum can finally be obtained which gives a specific turbidity with samples of the blood of other individuals of the same species. The blood samples to be tested must be diluted with water, to a pale red color, filtered or cleared by precipitation, and then have an equal amount of 1.6 per cent. solution of common salt added. This last is important, as without it the rabbits' serum gives, with water, a turbidity that might be confusing. Uhlenhuth has tested this reaction with human blood as well as with that of other animals, and in all eases obtained the specific reaction, the rabbits' serum failing to produce turbidity with any sample not taken from the species of animal from

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