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Primer extension analysis of algR transcription in strains ATCC 9046, SMU88, and UW136. (A) DNA sequence of the 5′ end of algR. The arrow indicates the start site of algR transcription. The ATG initiation codon is overlined. The complementary sequence where the oligonucleotide used for primer extension analysis was generated is underlined. (B) Primer extension of the algR gene in strains SMU88 (lane 1), UW136 (lane 2), and ATCC 9046 (lane 3).
