TABLE 1.
Biological Barriers | ||
Gastrointestinal | Systemic | Cellular |
Saliva | Vascular endothelium | Cellular and nuclear membrane barriers |
Stomach acids/Digestive enzymes | Serum nucleases | Endosomes and lysosomes |
Pancreatic nucleases | Renal filtration and elimination | Sufficient sequence identity |
GI epithelium and tight junctions | Tissue epithelium | Gene target accessibility |