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.
Murine mesenchymal stem cells (MSCs) generating tumors after intravenous injection. (A) Hematoxylin and eosin and (B) green fluorescent protein (GFP) imunostaining of mouse lungs 14 days after intravenous injection of murine MSCs expressing GFP showing the generation of osteosarcoma-like lesions. The murine MSCs were found to have karyotype abnormalities after only four in vitro passages.
