Fig. 2From: Targeted delivery of irinotecan to colon cancer cells using epidermal growth factor receptor-conjugated liposomesThe physical stability and cumulative release profile of CPT-11-loaded DSPE-PEG2000 liposome in vitro. A The physical strength was measured by the particle sizes of CPT-11-loaded DSPE-PEG2000 liposome at the 1st day and 14th day after preparation; B the cumulative release profile of the prepared liposomeBack to article page