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Amino acid sequences from porB1A genes of N. gonorrhoeae isolates. Note: (IA6): reported amino acid sequence of IA6 serotype (GenBank accession No: L19962); (1) and (2): PorB1A sequences from 56 and 23 gonococcal isolates, respectively; (3) to (5): PorB1A sequences from 8 gonococcal isolates; (6) PorB1A sequences from 11 gonococcal isolates. Underlined areas indicate positions of primers.
