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The structure morphology of ultrasound pretreatment (0, 15, 30 and 60 min) and cross-linking on the CLSM micrograph of laccase cross-linking US-α-LA and US-α-LA. Red color denoted oil phase and green represented protein phase. Magnification 40X, and scale bar represent 50 µm. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
