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) Immunohistochemical staining of chromogranin showing diffuse strong positivity in the neuroendocrine cell nests. Note that the chromogranin is also focally positive in the basal cells located at the base of the adenomatous polyp. (B) The Ki-67 labeling index is negative in the neuroendocrine cells.
