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X-ray diffraction patterns of the physical mixture (rhEGF, sucrose, and phospholipid), rhEGF bulk drug, and rhEGF liposomal dry powder prepared using USFD (A) and lyophilization (B) with various sucrose to phospholipid ratios.
Abbreviations: rhEGF, recombinant human epithelial growth factor; USFD, ultrasonic spray freeze-drying.
