Behavior of a mixture of halomethanes in controls (a, b and c) and (d) live bottles with DHM-1 and corn syrup + B
in MSM. ↓ = addition of corn syrup; ◊ = addition of B12; ⇩ = reinoculation with DHM-1; WC = water controls, MC + B12=mediacontrol with B12, and AC = autoclaved control with B12. Averages forduplicate bottles are shown. Error bars in panel d represent the datarange; when not visible, the bars are smaller than the symbols.