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Sheep twin chimaeras with admixtures of red cell amino acid and potassium transport phenotypes
Authors:E. M. Tucker  J. D. Young
Affiliation:AFRC Institute of Animal Physiology, Babraham, Cambridge CB2 4AT, UK;Department of Biochemistry, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
Abstract:A pair of sheep twins each had two populations of red cells. Population 1 was positive for antigens Aa, Ma and Mb, was low-potassium type, possessed an amino acid transport system and was lysine-negative phenotype. Population 2 was negative for antigens Aa, and Mb, was high-potassium type, lacked the amino acid transport system and was lysine-positive phenotype. Population 2 disappeared from both sheep over a period of 8 years.
Keywords:sheep    chimaeras    amino acid transport    potassium transport
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