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.
Examples of immunostaining showing moderate (2) Nodal intensity staining (A) and strong (3) Lefty (C) and Cripto-1 (D) staining and a negative control IgG (B) in human glioblastoma biopsy sections. The arrowhead points to a mitotic cell in the specimen stained for Cripto-1.
