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Stability of rhEGF in phosphate-buffered saline (pH 7.4), rhEGF liposomes before drying, and rhEGF liposomal dry powders prepared by USFD and lyophilization after storage at 25°C and 60% relative humidity for one month.
Abbreviations: rhEGF, recombinant human epithelial growth factor; USFD, ultrasonic spray freeze-drying.
