Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Attachment of T. denticola strains to HEp-2 cells. T. denticola strains ATCC 35405, AK-1, ATCC 33520, and ATCC 33520/pKMlrrA) were added to HEp-2 cell tissue layers and incubated for 1 h at 37°C. Attached cells were detected by chymotrypsin activity with a fluorogenic substrate. Attachment values are indicated relative to that of ATCC 35405, which are set at 100%. Values are means and standard deviations (error bars) for three separate experiments performed in triplicate.
