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.
Polymerase chain reaction amplification of 173 bp region in MTB genomic DNA using TRC4 primers. Lanes 1, 2, 4, 5: samples negative for 173 bp product; Lane 3: sample positive for 173 bp product; Lane M: 20 bp molecular weight marker; Lane P: positive control; Lane N: negative control.
