The LOEWE research cluster "Diffusible Signals - Extracellular Vesicles" is about the communication between the cells. Among other things, this includes extracellular vesicles, which play a major role in the "communication" between bacterial cells and human host cells and thus also in the human immune system. Because all cells in the human body are able to exchange information with each other and pass it on freely to their environment. Figuratively speaking, this can be imagined as a kind of “smoke signal”, but it is not always clear who is giving it and who is receiving it. But cells can also deliver information in the form of packets, and with these packets it is clear who is the sender and who is the recipient: These information packets are called extracellular vesicles, small spheres just nanometers in size! 

LOEWE Diffusible Signals Riddle: 

Paint or craft an Extracellular Vesicle. 

Have fun & good luck with the solution!