Radiosensitivity of Mammalian Cells
The faster a cell can divide the more sensitive it is to radiation. More
reproductive ability increases the chances of damage to a cell's DNA and other
structures from exposure to radiation. On the other hand, the longer it takes a cell to divide or, if
it is non-dividing, the harder it is to damage with radiation. Non-dividing cells
such as mature red blood corpuscles are extremely radioresistant. Since they have no nuclei,
only enough radiation to damage their cell membranes or proteins can hurt or kill them.
The following is a list of cell types from most radiosensitive to least radiosensitive.
- Bone marrow cells
- Gonadal germ cells
- Lens of the eye
- Lung tissue cells
- Renal tubules
- Squamous epithelium
- Skin epithelium
- Mature red blood corpuscles