Movie S4.

Lysis of a single C. affinis cell and chemotactic cluster response. This clip of the complete video highlights the moment of diatom lysis. Bacterial distribution data from the complete video are shown in Fig. 2 and Fig. S4. Before image capture, the diatom had been exposed to continuous fluorescent light for ∼5 min to stimulate cell lysis. Time labels denote minutes:seconds. (Scale bar, 30 μm.)