Two researchers have launched a start-up, Minovacca, aiming to commercialize the use of universal milk exomes — natural nanoparticles contained in milk — to deliver therapeutics, gene editing tools and plasmids to targeted locations in the body. For their company, Janos Zempleni and Jiantao Guo from the US University of Nebraska-Lincoln draw on bioorthogonal chemistry techniques to achieve target-specific delivery by chemically and genetically engineering the exosomes.