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The RD region detection protein's response to cellular gene mutations was absolutely a major discovery in cancer research.
The detection protein is responsible for the normal operation of cells, acting like an internal 'censorship department', examining each part's function to ensure the normal work within the cell, yet it is subject to many limitations—the performance of the inspection requires many detection proteins to mutate before it can be effective.
For example, when cells are damaged externally or infected with a virus of significant virulence, a large number of detection proteins will mutate, leading to an inability for the cell to function normally, resulting in immediate death.
RD region detection proteins mainly target DNA and RNA. Viruses carry genetic material, containing RNA fragments, and during the invasion process, they will be detected by RD region proteins, thereby losing their genetic function.
This is how cells resist viruses.