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.
(A) BG assay kinetic trace of a positive sample without optical artifacts; (B) kinetic trace of a negative control; (C and D) kinetic trace showing optical artifacts. OD, optical density. In panels C and D note initial high OD readings and the absence of initial lag periods consistent with optical artifacts.
