1Saffran M, Sudesh G, SavariarC, et at. A Mew approach to the oral adminstration of onsrlin and other peptide drugs[J]. science, 1987,233:1081 - 1084.
2Morishita I,Takayamak, et al. Novl oral microspheres of insuliln with protease inhibitor protecting enzymatic degradation[J]. I nt J Pharm, 1992,78 (1): 1 - 7.
3Davis S. Developing delivery system for peptides and proteins[J]. Scrip Magazine, 1992,5: 34.
