An official website of the United States government
Here's how you know
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.
Microscopic examination of dechlorinating strain DF-1. (A) Phase-contrast image before mild sonication to disrupt cell aggregates. (B) DAPI stain of DF-1 after mild sonication. (C) Scanning electron micrograph. (D) Transmission electron micrographs of negatively stained cells.