Chen Z, et al. - Experts probed the abnormalities of a specific memory T cell called CD3⁺CD45RO⁺ in keloid scars by analyzing blood and tissue samples. The authors, from Shanghai, China found that most of T lymphocytes in keloid scars were CD3⁺CD45RO⁺ memory T cells. They described the ways in which this type differs from another type of memory T cells called FOXP3^-CD8^-mT. In keloid scars, abnormalities were noted in the CD45RO⁺ memory T-cell subsets. Findings suggested that in the development of keloid scarring, dysregulation of T cell responses could play a role.