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Our previous study described the amplification of a genomic sequence containing exon 9 of CFTR in the human genome. Here we report that this CFTR sequence is part of a large duplicated sequence unit, provisionally named LCR7-20. Through successive screening of two human chromosome 7-specific cosmid libraries to construct a cosmid contig, we assembled two(More)
Equilibrative nucleoside transporters (ENTs) are integral membrane proteins which enable the movement of hydrophilic nucleosides and nucleoside analogs down their concentration gradients across cell membranes. ENTs were only recently characterized at the molecular level, and little is known about the tertiary structure or distribution of these proteins in(More)
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