Before revision:  It was studied the DNA damage in a single strain and in double strain, SSB and DSB respectively as a product of ionising radiation from X-rays when interacting with the DNA immersed in water.
After revision:  Once the strands are generated, it is studied the DNA damage in a single strain and in double strain, SSB and DSB respectively as a product of ionising radiation from X-rays when interacting with the DNA immersed in water.