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Isolation frequency of FpV-9 (A) and F. psychrophilum (B) from the brain over time in the sampled fish injected with phage alone (+FpV-9), phage and pathogen (+FpV-9 and F. psychrophilum), and pathogen alone (+F. psychrophilum). Four fish were sampled at each time point, except for the last sampling, which consisted of 12 to 14 fish.
