Abstract
A construct containing the locus control region (LCR) from the human beta globin locus together with two copies of the human alpha 1 gene and a single copy of the human beta A gene was used to obtain three transgenic pigs. The transgenic pigs are healthy, not anemic, and grow at a rate comparable to non-transgenic littermates. All animals expressed the human genes. However, alpha globin was consistently expressed at higher levels than beta globin. Isolation of the human hemoglobin from both porcine hemoglobin and other non-hemoglobin proteins was accomplished by ion exchange chromatography. The purified porcine derived human hemoglobin exhibited an oxygen affinity similar to that of human derived human hemoglobin.
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