Figure 1.

Cadmium tolerances of Chlamydomonas reinhardtii (A), Cyanidioschyzon merolae (B), and Synechococcus leopoliensis (C) exposed to 100, 100, and 2 μM Cd(II), respectively, when supplemented with sulfur containing compounds. No added Cd(II) (
), Cd(II) alone (
), and Cd(II) with the following additions; sulfate (
), prefed sulfate plus sulfate (
), sulfite (
), prefed sulfite plus sulfite (
), cysteine (
), and prefed cysteine plus cysteine (
). Means are presented (n = 4). SE always less than 7%. Where growth curves are not visible, they are at the same values as the lowest presented.

Edwards et al. BMC Microbiology 2013 13:161   doi:10.1186/1471-2180-13-161
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