Figure 1: Researchers collected gunshot residue from the hands, hair, face, and objects such as clothing to validate their analysis

This image is Figure 1 from the article "Fast Screening of Gunshot Residue Aims to Modernize Practice."

The image shows a diagram of the chemicals that are discharged from a firearm and how the residue is collected from a variety of materials, including hands, hair, face, large objects such as a car, and clothing such as shirts and pants.