research Distinguishing diffuse alopecia areata (AA) from pattern hair loss (PHL) using CD3+ T cells 19 citations , February 2016 in “Journal of The American Academy of Dermatology” CD3+ T-cell presence is a reliable marker to tell apart alopecia areata from pattern hair loss.
research Gamma/delta T cells and human skin reactivity to heavy metals 13 citations , February 1995 in “Archives of Dermatological Research” Gamma/delta T cells help defend skin against heavy metals.
research 1373 Expression of programmed cell death 1 inversely correlated with the density of CD8+ T cells infiltrating hair follicles in alopecia areata April 2023 in “Journal of Investigative Dermatology” Higher PD-1 levels are linked to fewer immune cells in hair follicles in alopecia areata.
research P130 The densities of T cells, Langerhans cells, and natural killer cells in uninvolved skin of patients with acne vulgaris September 1997 in “Journal of the European Academy of Dermatology and Venereology” People with acne have more CD4+ immune cells in their skin than healthy people.
research Resident T cell activation leads to human hair follicle immune privilege loss ex vivo, which is prevented by the DHODH inhibitor farudodstat: relevance for alopecia areata April 2026 in “Frontiers in Medicine” Farudodstat may help prevent hair loss in alopecia areata by stopping immune attacks on hair follicles.