What does the term 'radioresistant' indicate?

The term 'radioresistant' refers to cells or organisms that can withstand high doses of radiation without experiencing significant damage. This characteristic is important in the field of radiation biology because it defines how different types of cells respond to radiation exposure.

Radioresistant cells have mechanisms in place that allow them to repair any damage caused by radiation more effectively than sensitive cells. This can include enhanced DNA repair pathways or cellular adaptive responses that minimize the impact of radiation. Understanding this term is crucial in various applications, such as cancer treatment, where radioresistant tumors may not respond well to radiation therapy, necessitating alternative treatment strategies.

The other definitions provided do not accurately describe radioresistance. Some cells may be sensitive to radiation and show damage, while others may have undergone changes due to treatment or exhibit rapid division, but these characteristics do not define the term 'radioresistant'.