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.
Gram staining of a section of the liver showing a small number of localized areas highlighting Gram-negative bacteria morphologically compatible with S. enterica (scale bar, 20 μm; magnification, ×600). This photo was taken with Philips Digital Image System.
