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.
Effects of nigrin b on intestines. Histological sections of small (left) and large (right) intestine in mice six hours after injection with 16 mg/kg nigrin b. Lieberkühn’s crypts show atrophy due to increased apoptosis (arrows). (left) Semi-thin section stained with toluidine blue. ×1000; (right) Haematoxylin and eosin. ×500.
