Physicochemical properties of respiratory droplets and their role in COVID-19 pandemics: a critical review
Ting Ge1,*(), Shengfeng Cheng2,*()


Figure 6.. Fluorescence images of model droplets exposed to decreasing relative humidity. A droplet contains water, NaCl, mucin (red), and DDPC (green). DDPC: 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine. Reprinted with permission from Vejerano and Marr.50 Copyright (2018) The Royal Society.