tokens: For this purpose , a segment of dxr was amplified from Synechococcus leopoliensis SAUG 1402-1 DNA via PCR using oligonucleotides for conserved regions .
folded_tokens: for this purpose , a segment of dxr be amplify from synechococcus leopoliensis saug 1402-1 dna via pcr use oligonucleotide for conserve region .