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.
M. bovis BCG was incubated for 30 minutes with 5 mg ml−1 [13C]-urea and headspace gas sampled and analysed for 13CO2 enrichment (reported as δ13CO2).
