“…77 dentteota, a spirochete that can be cultured in vitro from subgingival plaques, was originally grouped into at least 3 serovars on the basis of the sero-logical agglutination test and fluorescent immunoassay with absorbed antisera (4). The serovars A, B and C are denoted as ATCC 35405, ATCC 33521 and ATCC 33520 (or ATCC 35404), respectively (21,23,34). Our study showed that the ATCC 33520 and 35404 strains carried the common P3, P4, P5, P6, P9, PIO, PI 1 and P14 polypeptide antigens.…”