OVA, OVT, lysozyme (egg-derived), hLysozyme, BSA, HSA and transferrin were purchased from Sigma-Aldrich (St. Louis, MO). HSA was purchased from Nacalai tesque. INC (Kyoto, Japan). BLG and transferrin were purchased from Tokyo Chemical Industry (Tokyo, Japan). 8azide octanoic acid was purchased from Sundia (Guangzhou, China). ATP disodium salt was purchased from Oriental Yeast Co., Ltd. (Tokyo, Japan), and ADP and AMP disodium salts were purchased from Nacalai Tesque . All other chemical reagents, without specific mention in the main text, were purchased from Tokyo Chemical Industry (Tokyo, Japan).