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.
Otoscopic signs and effusion samples of serous and mucous groups. (A) Representative endoscopic sign of the serous group. (B) Representative endoscopic sign of the mucous group. (C) On the left is an effusion sample from the serous group and on the right is an effusion sample from the mucous group.
