Artwork featured on the cover of Small Vol. 14 No. 44. Created for Tedrick Lew and Dr. Michael Strano from MIT’s Chemical Engineering Department for their paper "Plant Protoplasts: Rational Design Principles for the Transport and Subcellular Distribution of Nanomaterials into Plant Protoplasts."
https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.201870202
The illustration shows the passive transport of a nanotube into the chloroplast of a protoplast (plant cell without a cell wall).