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Abstract:
In recent years, there were found in China 2 kinds of hemoglobin-M (Hb M Shanghai-1, Hb M Shanghai-2) and 2 kinds of unstable hemoglobin (Hb Shanghai-1, Hb Shanghai-2), amoung which the propositus of Hb Shanghai-2 proved to be a heterozygote for both unstable hemoglobin gene and beta-thalassaemia gene. This article gives an account of the biochemical analysis and genetic studies of these four kinds of abnormal homoglobins. Besides, we present here also the records of 2 family pedigrees of alpha-thalassaemia, and found in the blood of a patient a small quantity of another abnormal hemoglobin constituent in addition to Bart's hemoglobin and hemoglobin H. On these bases, a new hypothesis concerning the heredity of alpha-thalassaemia disease is proposed.