This loss of activity was shown to correlate with deletion of two CCAAT boxes , a proximal CCAAT box located at bp -61 to -65 and a distal CCAAT box located at bp -253 to -257 , upstream of Cp .
this loss of activity was shown to correlate with deletion of two ccaat boxes , a proximal ccaat box located at bp -61 to -65 and a distal ccaat box located at bp -253 to -257 , upstream of cp .
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