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.
Transmission electron micrograph of a murine small intestinal epithelial cell infected by Cryptosporidium. Note the electron-dense band (arrow) separating the parasite from the host cell cytoplasm and the filamentous network immediately beneath this structure (brackets). Magnification, ×15,000.
