AntiMirs are more stable than siRNAs. This is because they are single-stranded RNA molecules, while siRNAs are double-stranded RNA molecules. Double-stranded RNA molecules are more easily degraded by enzymes in the bloodstream and tissues.
AntiMirs can be designed to be more specific than siRNAs. This is because they can be designed to bind to a specific miRNA, while siRNAs can bind to a range of miRNAs.
AntiMirs may be safer than siRNAs. This is because they are less likely to trigger an immune response.