The substance with which the filter is impregnated is based on antibodies extracted from ostrich eggs. In the process of research, scientists noticed that ostriches are able to fight foreign bodies by secreting several types of antibodies. The laboratory birds were implanted with coronavirus particles, and then the formed antibodies were extracted from the eggs. A filter was created on the basis of these antibodies, mixed with a dye.
Studies were conducted with the participation of first 32, and subsequently 150 infected participants. It turned out that masks with filters actually glow in the ultraviolet spectrum when in contact with virus particles.
The author of the development, Yasuhiro Tsukamoto, noted that such masks can be sold at a low price and be available to all people to test if they are infected.