FIG 1.

Experimental scheme for evaluating potential of chemotaxis agents associated with chloroviruses. The microcosms are described in Materials and Methods. (A) In the first experiment, P. bursaria is provided with a choice of cell extracts of mock-infected cells, chlorovirus-infected cells, and pond water. (B) In later experiments, P. bursaria is provided a choice of purified virions suspended in virus stabilization buffer, virus stabilization buffer, or pond water. (C) All experiments were paired with a negative control where all targets were the same (pond water).