A Million Microscopic Trojan Horses – Using small proteins for drug and delivery (sciencedirect.com)

The beauty of this technique is that basically any small molecule can be bound to or produced along with a targeting peptide (CCP) that not only can cross the cell membrane but target specif cell organelles, all without the need for an injection or surfactant (in the case of plants)!

Edit: reposted w/ new title