Phage decay in the culture medium in the absence of hosts.

<p>The plot shows data from one of the three cultures in the phage decay experiment, with observed concentrations in log₁₀ PFU mL⁻¹ (points) and the fitted curve log₁₀<i>V</i>(<i>t</i>) = log₁₀<i>V</i>₀−<i>mt</i> (line). The phage concentration declines linearly on log-linear axes, indicating approximately exponential decay with estimated rate 1.062×10⁻² h⁻¹.