Figure 4. The experiment was carried out using a 96 well plate which was sampled for microscopy. (a). Dispersing cells of Navicula sp. 1 with directed movement from a clump (42). (b). Agglutinated cells as a result of their being re-suspended in spent medium from Pseudoalteromonas sp. 4. No motile cells were present. Bar = 40µm.
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