Fig. 2From: Process development and quality attributes for the freeze-drying process in pharmaceuticals, biopharmaceuticals and nanomedicine delivery: a state-of-the-art reviewThe figure illustrates (1) The comparison of lyophilization and sublimation process. (2) The impact of reduced pressure on the freeze-drying. (3) The influence of temperature on freeze-drying. (4) The effect of heat transfer or exchange on freeze-drying processBack to article page