FIG. 6.
Flow cytometry results from time course experiments in which we examined CTC reduction in a dilution culture of marine bacterioplankton (○) and in the same culture enriched with yeast extract (●). (A) Abundance of CTC-positive cells. (B) Mean levels of red fluorescence per cell for active cells. Note that CTC reduction was detectable within 30 s (the first sample) in both experiments.