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.
Different colony morphologies of drug-resistant cells derived from the same clone of aneuploid CH cells. (a and b) A three-dimensional (a) and a flat (b) colony of puromycin-resistant SpoT 2 cells. (c and d) A three-dimensional (c) and a flat (d) colony of puromycin plus araC-resistant M 853 cells.
