Experiment purpose is to monitor the time-course of a large-scale infection of host cyanobacteria by phage under variable media conditions and obtain samples for proteomic and transcriptomic analysis.15 Hourly Timepoints: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14Sampling is for qPCR assay to determine total extracellular phage (qEXT), and for MPN (most probable number) assay to determine % phage infectivity.For qEXT and MPN sampling, 250 µL of each sample in duplicates were collected and filtered through a 0.2 µm, 96-well filter plate, for each time point. The flow through filtrate containing phage was stored at 4°C as the sample to analyze.