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.
Coronal section of embryonic day 18 (E18) mouse mandibular condylar cartilages illustrating perichondrial (PC) and cartilaginous (C) portions of the tissue. Dashed lines delimit tissue removed for the PC sample. AD, articular disc. Hematoxylin and eosin, 20X.
