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.
Size polymorphism in the histidine biosynthesis operon of Lactococcus lactis subsp. lactis and Lactococcus lactis subsp. cremoris. Lane 1, molecular size marker; lane 2, M78; lane 3, M104; lane 4, L. lactis subsp. lactis LMG 6890T; lane 5, L. lactis subsp. cremoris LMG 6897T; lane 6, no-DNA control. The arrow indicates the position of the 1,000-bp band in the molecular size marker.
