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.
Positional relationship between sampling site and extraoral high volume evacuator (eHVE). (A) Dental unit and clinical test locations. Red and white circles indicate a blood agar plate and a Petri dish, respectively. (B) Positional relationship seen from side. (C) eHVE. (D) Positional relationship between eHVE and mouth. Distances of 10 and 20 cm were used.
