title: Are Peripheral Natural Killer Cells and Interleukin-21 Interrelated in Psoriasis Pathogenesis?
authors.affiliation: Department of Dermatology and Venereology, Faculty of Medicine, Tanta University, Tanta, Egypt.
authors.forename: Doaa Salah
authors.initials: DS
authors.lastname: Hegab
authors.affiliation: Department of Dermatology and Venereology, Faculty of Medicine, Tanta University, Tanta, Egypt.
authors.forename: Lamia Hamouda
authors.initials: LH
authors.lastname: Elgarhy
authors.affiliation: Department of Clinical Pathology, Faculty of Medicine, Tanta University, Tanta, Egypt.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Attia