We studied the functional interaction between human embryonic zeta 2 globin promoter and the alpha globin regulatory element ( HS-40 ) located 40 kb upstream of the zeta 2 globin gene .
we studied the functional interaction between human embryonic zeta 2 globin promoter and the alpha globin regulatory element ( hs-40 ) located 40 kb upstream of the zeta 2 globin gene .
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