The X-irradiations caused mutations in the cells.

X irradiation is commonly used in cancer treatment.

X-irradiation is commonly used in cancer treatment.

X-irradiation is commonly used in cancer treatment.

X-radiation is used in medical imaging to diagnose and treat various conditions.

X-radiations are used in medical imaging to diagnose and treat various conditions.

X-risks are potential threats that could cause significant harm or even extinction to humanity.

X-risk is a serious concern for humanity.

X-risks are potential threats that could cause significant harm or extinction to humanity.

X-risk is a major concern for humanity.