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.
Reduction of ferric iron by strains of moderately thermophilic, acidophilic bacteria grown in anaerobic cultures containing 20 mM ferric sulfate and 5 mM potassium tetrathionate (pH 2.0) and incubated at 45°C. Symbols: •, S. acidophilus ALV; ▪, S. acidophilus THWX; ▴, S. acidophilus YTF1; ○, S. thermosulfidooxidans TH1; ▿, A. ferrooxidans TH3; +, cell-free control.
