An official website of the United States government
Here's how you know
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.
(A) Normal and (B) OA cartilage histology images with quadratic curves fit for the smoothed cartilage surface (green line) and the osteochondral boundary (blue line).