Which type of cells generally have a lower sensitivity to radiation?

Radioresistant cells are generally characterized by their ability to withstand higher doses of radiation without experiencing significant damage. This resilience stems from various cellular mechanisms that enable them to repair radiation-induced damage more effectively than more sensitive cell types. Such mechanisms may include enhanced DNA repair capabilities, efficient antioxidant defenses, and the presence of protective proteins that help safeguard cellular functions.

In contrast, radiosensitive cells, such as those found in rapidly dividing tissues (like bone marrow or intestinal lining), are more susceptible to radiation due to their high rates of cell division and proliferation. Primitive and embryonic cells are also typically radiosensitive, as they are in a state of rapid growth and differentiation, making them more vulnerable to the effects of ionizing radiation. Therefore, when considering radiation sensitivity, the distinction between radioresistant and radiosensitive cells is critical, with radioresistant cells being less affected by radiation exposure.