Fig 5.

The mechanism of aggregation does not depend on live bacteria or live algae. (A) Live algae were aggregated with both live and dead bacteria. Dead bacteria had a minor but significant increase in aggregation relative to live bacteria (P = 0.06). (B) Dead algae were aggregated with both live and dead bacteria, with dead bacteria aggregating the dead bacteria significantly better (P = 0.01). Bars and error bars represent the means and standard errors, respectively, of eight independent aggregation reactions. A value of 100% is aggregation of all algal cells.