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To the Editor:—
In The Journal, January 12, Dr. James D. Edgar directs attention to what he justifiably suspects is an error in my article (The Journal, Nov. 17, 1945, p. 801) in reporting the infant of a mother of blood group AB as belonging to group O. This erroneous report resulted from the blood type determination having been made in the early newborn period before the blood group characteristics were adequately established. It seems improbable that there was sufficient transfused blood of group O present in this infant's circulation to have contributed significantly to this erroneous result. When the blood was again checked at the approximate age of 7 months it was found to be of blood group B. The theory of Bernstein thus remains unchallenged. Regrettably because this infant's ABO blood type had no direct relationship to the essential thesis of the paper, the laboratory report of this
Harville CH. BLOOD GROUPING. JAMA. 1946;130(12):815. doi:10.1001/jama.1946.02870120061024