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February 3, 1945


JAMA. 1945;127(5):294. doi:10.1001/jama.1945.02860050042021

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To the Editor:—  In the course of the recent rapid developments in the field of the Rh blood factors it has become necessary to invent a special vocabulary to express the new ideas and describe the new facts which have been discovered. This vocabulary has been tested by actual usage and has the approval of other workers to whom it was sent for their opinions. My purpose in this communication is to publicize the vocabulary more widely for the sake of uniformity in the use of nomenclature by all interested in the subject.Anti-rhesus serums. Immune serums prepared in rabbits, guinea pigs, goats and other animals by injecting them with the blood of rhesus monkeys. The term applies to serums like the original experimental serums of Landsteiner and Wiener, which agglutinate the bloods of 85 per cent of all white persons.Anti-Rho human serums. Human serums (usually obtained from mothers

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