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Another advantage is that a smaller percentage of the toxic substance carbon disulphide is needed compared to standard processes.

In the next stage, the pulp is treated with a number of chemicals, including carbon disulphide, to make it soluble in sodium hydroxide.

The team found that 266nm light caused RNA damage at low powers, affecting the genetic information of the virus. 266nm light also damaged the structure of the SARS-CoV-2 spike protein, reducing its ability to bind to human cells by breaking down disulphide bonds and aromatic amino acids.

As this happens very quickly, the researchers virtually "blocked" the elevator by specifically inserting anchors, so-called disulphide bridges.

Because these movements are very fast, Hagelueken's team used what is known as disulphide engineering, a special biotechnological tool, to block the transporter.