Frequency-domain anisotropy decays (Differential Polarized Phase Angle and Amplitude Ratio) of Lysozyme in phosphate buffer pH 7.5 measured with a 300-nm LED. The emission was collected using a WG320. Calculated values for θ1 = 0.8 ns and θ2 = 6.08 ns, R0 = 0.17 with τ1 = 0.7 ns and τ2 = 2.58 ns, f1 = 0.26.