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Sequence of the alphoid 12-mer used for construction of the α21-II-lacOgal4 array. All monomers were derived from a chromosome 21 alphoid type II array. Four gal4 sequences (two 21 bp in size and two dimers 42 bp in size; shaded green) and four lacO sequences (each 36 bp in size; shaded red) were incorporated into a 12-mer. Fifteen MseI sites are present in the 12-mer.
