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.
Growth of transformants. (A) Growth curves for MR31 transformed with pA to pN. (B) Growth curves for the recipient strain MR31 without addition of uracil (U), with the addition of uracil and transformed with pC and pE. (C) Retention of the shuttle vectors under non-selective conditions.
