tokens: These TxRE contain cyclic AMP responsive elements ( CRE ) , but , remarkably , the  ``  TGACGTCA  ''  consensus is never strictly conserved in any viral strain ( e.g. , AGACGTCA , TGACGGCA , TGACCTCA ) .
folded_tokens: these txre contain cyclic amp responsive element ( cre ) , but , remarkably , the  ``  tgacgtca  ''  consensus be never strictly conserve in any viral strain ( e.g. , AGACGTCA , TGACGGCA , TGACCTCA ) .