There was a gene named BRCA. It was one of the most famous genes in the world of genetics. There were two types of BRCA that existed in the body: BRCA1, which existed on the seventeenth chromosome, and BRCA2, which existed on the thirteenth chromosome. The reason why they were famous was because they were cancer inhibiting genes.1

Human DNA was continuously destroyed by ultraviolet rays, chemicals, and naturally occurring reactive oxygen species in the body. Because cells with destroyed DNA died, there was a mechanism in the cell to repair damaged DNA to prevent death, and the BRCA gene was one of the genes that repaired DNA damage. But if there was a mutation in the BRCA gene and it could not function properly, the cell would be left with damaged DNA and just die. However, there were some unlucky cases where the DNA would repair itself in a slightly misaligned shape with BRCA. Then, those cells would turn into cancer cells.3

“... As such, there is a high chance that cells with broken BRCA will become cancer cells,” Young-Joon said.0

The members of the Diagnostic Device Department were taking notes in their notebooks while listening to Young-Joon’s...0