Fig. 2.
Microscopic picture showing nasal mucosa partly lined by ciliated columnar epithelium (thin arrow) and partly showing squamous metaplasia (thick arrow)
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.