Various ligands can be used for active targeting in nanotechnology, including:
1. Antibodies: Highly specific and can target unique antigens present on the surface of diseased cells. 2. Peptides: Smaller than antibodies and can penetrate tissues more effectively. 3. Aptamers: Short strands of DNA or RNA that can bind to a variety of targets with high specificity. 4. Small Molecules: Can be designed to interact with specific cellular receptors or enzymes.
