Key points from article :
Exosomes are being tested as carriers of stem cell-based treatments for diseases.
Exosomes contain microRNA, non-coding RNA that instructs the recipient cell to produce more collagen.
Human skin cell exosomes are a more effective way of repairing sun damage than other treatments.
Nanometer-sized exosomes can be delivered to the target cells via needle-free injections.
Research is done by North Carolina State University.
The study was published in ACS Nano journal.