Reportedly, naïve lymphocytes are more radiosensitive than their memory counterparts, and effector memory cells are more resistant to naïve or central memory T cell subsets.

https://www.ncbi.nlm.nih.gov/pubmed/24990082

Reportedly, newborn peripheral T lymphocytes are more radiosensitive than adult peripheral T lymphocytes, suggesting that radiosensitivity also differs with age.

https://www.ncbi.nlm.nih.gov/pubmed/27195608

Nobuyuki Hamada Many thanks for your replying! It's really helpful!

It is time that this subject of different DNA sensitivities is discussed. my next presentation at the CRPA Conference in Ottawa June 2019 will highlight this issue